Italy

 Today's foray into blogland begins in a car park in Padua, Italy!

We have been touring the country in the camper van, and revelling in the general lack of tourists, the excellent food, the cheap wine, the hospitality of Jackie's relatives (some very properly socially distanced, others, surprisingly, not at all), and the congenial average temperature - about 23°C in the daytime, and not very cold at night.  Obviously, this means quite a lot of driving.

Italy seems to have come up with an ingenious solution to the problem of road maintenance.  I think they must use a bit more concrete in the mix than is common in the UK.  Many of the roads seem to have a surface which is harder than standard asphalt, and some even have quite a concrete-like colour.  Whatever the secret formula is, it seems to give their roads an extremely long life.  They use it on local roads and autostrata alike, and these roads simply don't need any repair; even when they have cracked, sunk, collapsed into ragged ruts, or dissolved into a patchwork of potholes whose severity jars the teeth of car drivers, and reduces camper vans to a crashing, rattling, cupboard-flying-open-and-depositing-the-contents-of-the-bin-all-over-the-floor ordeal, they still don't need any repair. Amazing!

Alas, since Italy isn't especially renowned for architecture, art, literature, opera, design, fashion, Roman history, or even football, I have had to return to my go-to topic for foreign blog posts, which of course is sculpture - especially in public spaces.  

The Montagnolo Park in Bologna has a few examples of the genre.  At the entrance gate, atop a massive plinth, is this rather unsettling tribute to that most ignoble of sentiments, revenge.  The dead geezer apparently borrowed the other chap's windsurfer without asking, and completely ruined the sail; whereupon the said chap clocked the geezer a good'un and knocked him out cold.  At least, that's how I read it.

That'll teach you to ruin my windsurfer!

Inside the park there's a round pond featuring a few more pieces of the chiseller's art, displaying an odd mixture of themes.  Underwater hairdressing seems to be one of them; at least I detect a strong undercurrent (ha!).  There are also battling animals of various sorts, and mermaids, which are obviously a good excuse for the most commonplace and historically popular thematic undercurrent in sculpture.  I refer, of course, to breasts.

So here are some mermaids in the subaquatic salon, engaged in the final throes of an underwater half-head foil tint in granite greys, caught in the moment just before applying the aerosol fixer spray.  Of course, there are breasts aplenty, and quite proudly so. The customer seems quite delighted, as I'm sure are the breast-fancying public. Excellent work by our master chipper.

Close your eyes while I give you a spritz with the glue darling!

In case you're wondering what's going on behind the mermaid's tail, here's a view from the other side.  It's a lion and a snake, earnestly engaged in a fight over a dead fawn (or some such), without offering the slightest clue why.  Surely we shouldn't be celebrating this sort of apparently wanton violence?  Or is it just to show us the horrors of nature, grey in tooth and claw?  I don't know.  At least there aren't any inappropriate breasts on show.

My dead thing!

Moving on, we come to the second of our underwater hairdressing scenes, this time in the hair washing category.  Another prize-winning collection of pert breasts is on display, but this time the customer has an extremely steely gaze, which either says "I asked for black coffee and all I got is this ridiculous sea shell" or "My eyes are up here mate, what do you think you're looking at?"

Either way, its a little bit unsettling.

What do you think you're looking at?

Finally, there's another animal battle scene.  This one seems suggest a title like "When you think you've won, and then someone unexpectedly sticks a sharp object up your bum"

WTF??

Elsewhere in Bologna, the message seems a bit mixed.  This chap seems to be sitting in judgement - 

I paid for a haircut, what do you call this?

 - but maybe he's upset by the pre-pubescent asp-ects (geddit?) of this latecomer to the Bologna shopping centre breast-fest:

Hmmm...  What do you think? Is it art, or is it just a bit wrong really?

In other news; some Italian towns have a surprisingly large number of bicycles.  The picture below was taken in Padua, which is a university town, and therefore a bit of a special case, since all students everywhere are obliged to have one or more bicycles; but it does give a clue as to how extreme the situation has got there.  

quite a lot of bicycles

It's quite an old university actually, having been established some time before 1222, and so it's naturally a good place to find old bicycles, too.  As part of my never-throw-anything-away mentality, I have a special affection for those bicycles which go on forever, and thus a particular delight in still-in-use bicycles with rod operated brakes. I'm sure you do too.  Anyway, I was jolly pleased to find this one...

rod brakes

...which seems to still be using the original chain, too, judging by the state of it.

look at the the state of it!

Maybe chain covers only work if the back end hasn't fallen off.  

Anyway, imagine my delight when I found this:

This marvel of biciclettaria was made by A. Cottognoli, who not only wrote his name on the frame and the saddle, but also hand-painted it on the chain cover.  But the interesting thing is that this bike marks the very point of the transition (at least for for Signore Cottognoli) between rod brakes, and those new-fangled Bowden cables.  Behold:

See what I mean?  All the bent rods, springs and trunnions (look it up!) of a rod brake setup, and then some more of the same technology to connect up those cables.

Incidentally, the rear brake cable goes neatly into the second top tube without drilling any holes in the headstock or the seat tube.  The second top tube is welded (or brazed) in place without any lugs, even though lugs are used on the other tubes.  He can't have added that second top tube just to hide the cable, can he?  

I refuse to pollute my frame

with your ugly cable, Signore Bowden!

Hmmm....  Classy job threading it through there, though.  Respect.  

If only the chap who wired up the front light setup on hadn't let standards drop.

Progress on all fronts

 

Things are looking up! 

We have relocated the bird feeder to the middle of the lawn, the better to protect the little critters from predatory cats, and also to thwart the embarrassed squirrel, if he (or she) should ever overcome the ignominy of falling off last time, and return to try to steal our nuts again.  The lovely Jackie cut and folded back a square of turf and dug a little hole for position, and I brought in the pro tools - Leo's post hole device and his big pointy steel stick.  The post hole device is like a pair of steel hands, hinged at the wrists, that you throw vigorously down the hole.  Then you lever them together with the long handles provided and lift them out, complete with a handful of soil clutched between them.  If the ground is hard, you have to break it up a bit first, by throwing the big pointy steel stick down there a few times, point first.  In this way you can dig a nice clean cylindrical hole, about eight inches across, up to (or possibly down to) two or three feet deep. Then you stand your bit of aluminium tube in (with the bird feeder post installed, and 2-axis spirit level (specially for posts) attached, and put all the soil back in again, this time tamping it down all round as you go, with vigorous blows from the blunt end of the big pointy steel stick.   Keeping an eye on the spirit levels and adjusting for verticality all the while, of course.

Post, with various tools (and aluminium tube offcut)

So far so good, but I still hadn't decided how to make the thing usable by people of modest height when refilling the bird feeders.  Of course I went through various ideas involving hinges and sleeves, and we even discussed lifting the whole thing bodily out of the ground, without finding any appealing solutions.  Somewhere along the way I found myself explaining how a pip pin works* to the lovely (and ever-tolerant) Jackie and remembered that windsurfers used to use a pair of pins mounted on a U-shaped spring for exactly this sort of telescoping tubes requirement.  I used to have windsurfers many years ago, and even though I did once have to saw one of them up to take it to the dump,  I kept a few of the more more portable bits - like the heavy duty mast foot connector.  And so I had just the thing.

So now you just lift the pole, press the little blobs on either side together, and slide it all down into the ground, leaving the feeders at a comfortable height for maintenance.  When you're done, you lift it up, and a satisfying click tells you that your work is done.

Although installing this gizmo part way up the tube did necessitate making a special tool, it was only a bit of aluminium tube with some notches filed into the end, which wasn't really much of a stretch, technically. So I made a little plug for when you want to mow the lawn.  You can remove the bird feeder pole to a safe place, and plug up the hole to stop any bits of stuff falling in while you mow over the top.

Here it is being a plug...

plug

...and here it is showing off its tiny little retractable handle.

tiny little retractable handle

 Awww!  

Meanwhile, in another part of the forest, parcels have begun to arrive.  Two 4-channel USB relay boards (Chinese ones this time - £5 each brand new) the other day and today, the three-port motorised gate valve!  Which is also from China...

Here it is, looking pretty funky on the sofa:

pretty funky

It even comes with a User Manual, written in English - sort of.  But it's not all completely plain sailing.  On the top of the casing, it mentions AC220V 50/60Hz (which is promising) and shows the connections as two live - "BR" and "BK" and one neutral - "SR".

That might me OK if the wires were Brown, Black and, er, Sun Ripened? Spring Roll? Snow Reopard?   But no.  This is the actual cable they used for two live and one neutral wires:

two live, one neutral

 

Which is not quite the way we do it in the UK, as I'm sure you are aware.  But I'm sure the User Manual will make it all clear, no?

The User Manual is eight pages long, but the pages are only 100mm x 70mm.  Still, they manage to cram a lot in there, by simply writing in very, very, very small letters. The largest characters on the page shown below are less than 2mm high, and the smallest ones are so small as to actually be completely invisible!  Here is page 3,, showing the the ever-useful "Electric Principle Diagram", with a biro for scale:

gigantic biro

OK, here's the important part made a lot bigger:

Electric Principle Diagram

Ahah! So there are two wiring diagrams - but no clue which one is relevant.  No worries, I know this is supposed to be a CR3-01 layout - so it must be the bottom one.  "Three wires two controls", don't you know. Now the wires are usefully labelled ON, OFF ,and N.  But the colours have changed to BL, BR and SR.

At this point one could just infer that SR means "yellow with a green stripe" in some world, and bash on, but since the valve is liable to destroy itself if one wires it up wrongly, my preference is - take it apart and see what's happening inside. Fortunately the case is held on with actual screws.  It turns out that Yellow and Green is indeed neutral(!); applying power to the Blue wire moves the valve to straight though (which they call ON, or perhaps OPEN VALVE), and powering Brown moves it to divert to the side port (or OFF, or CLOSE VALVE).

So that's everything cleared up then.

Except for this feature:

a worra, or Chinese arrow

I am not a real plumber, so I accept that I may be barking up the wrong pipe here, but I would have thought that arrow cast into the housing on the right shows the way the water goes in.  Seems a reasonable guess, anyway.  Actually no - that's one of the ports which gets blocked off.  The available states are:

  (1) The arrow port is connected to the straight-through port, and the side port is blocked

  (2) The arrow port is blocked, and the other two are connected

The actuator mounts on the valve body like this:

I hope you can see how this works...

I hope you can see how this works - when it's all screwed together, the actuator body is keyed to the valve body, and the spindle is driven by the actuator.  Note that all these parts are 180 degree rotationally symmetrical, so it doesn't matter whether you mount the actuator with the lead at the front or the back, it still does the same thing - the actuator still rotates in the same direction through 90 degrees, and back.  However, the valve ball itself has a tee-shaped hole through it, which is not 180 degree symmetrical.  If you rotate that 180 degrees within the housing, the possible outcomes are: 

  (1) The arrow port connects to the side port, and the straight-through port is blocked

  (2) All three ports are connected together

   

Alas, this isn't a very useful arrangement.  It's just a two-port valve with an extra port that's always connected to the arrow port. So did the folks in the factory put the valve ball in upside down? Or do arrows really work the other way in China? They do write from right to left, after all.  Who knows? 

Well, maybe the User Manual can help:

AB to A what?

The note reads "Attention: When you assemble the actuator and valve body, the angle of actuator power down-lead and valve body should be 90 degrees".  Which is simply not possible with my valve components (as you can see in "worra - a Chinese arrow" above) even though it clearly was possible when they took that picture for the book.

And that diagram of the "3-way"!  It says: "The direction of flow: AB to A  AB to B" - but they have sadly neglected to label the ports.  The arrows certainly suggest that the side port is common, and the valve should select which of the others connect to it - but then again, those are Chinese arrows.  And that arrangement is not possible with the bits I've got.  You would need a ball valve with only a right angled hole in it.  And be able to mount the actuator the appropriate way round - one might almost say, "at the right angle".

All this is really neither here or there is the long run, since I can get it to do what I want merely by filing off the offensive arrow, and going left-to-right instead.  I just thought you might be interested.

Still the User Manual does contain some useful information, such as this "Installation Notice":

"Please keep the temperature of pipeline and the valve.

Do not put the actuator inside of protected cover"

OK.  I had been planning to put it in a nice box, but now maybe I'll just leave it out in the rain, and hope for the best.  Just as well it's got a CE mark, eh?

 * If you don't know what a pip pin is, here's a pretty animation:

https://www.youtube.com/watch?v=qLTZiNngk9c

Gardening, again

Apart from the watering system, and investing large sums of money in plants, soil improver and the services of Jason the gardener, I haven't really had much to do with the progress in the garden.  But progress there has been, and the once tiny plants are mostly bursting forth all over the place.  The most spectacular of all is the raspberry patch we inherited from the previous owners, which is just astonishing.  We are now in the middle of the fruit season, and it creates at least a pint or two of large, perfect, beautiful tasty raspberries every day - yesterday we processed a haul of 2.3 kg of them into coulis, and still ate a huge pile for supper.  We've had the neighbours in to pick them, and given them away to people, and they just keep coming.  

Meanwhile, with the help of the local sparrows and their specially adapted beaks, my bird feeder has propagated a splendid crop of grass where the excess seeds fall into the flower bed underneath it.  Alas, this wasn't in the planting plan, and the lovely Jackie disapproves.  So the bird feeder must now be moved to a socket in the middle of the lawn, and the modified fence upon which its intricate latch machinery is mounted must return to its previous state.  That didn't last long, did it? Still, it was only a prototype.  It does mean buying a suitable piece of square tube though.  Oh well.

Also only a prototype, the automated irrigation system has been such a resounding success that it has outgrown the capacity of the recycled water system's pump to supply everything at once, so I am now obliged to modify it into zones.  This means having a motorised ball valve out in the garden, to switch the water to either the bed with the new fruit bushes (but not the old raspberries) or the bed on the other side of the lawn.  While we're about it I've splashed out (ha!) on a motorised ball valve to control the on/off state instead of the washing machine valves.  Ball valves provides less restriction to the water flow, and they don't take any power when they're open, so you don't need pauses in the watering to let them cool down.  Alas, the new valves must perforce be purchased - but the washing machine valves can go back into stock.

Of course two valves instead of one means we need a multi-channel USB relay board, which means a new box under the counter top too.

So essentially, all the interesting bits of these two projects are about to be replaced.  As I said, they were only prototypes...

Meanwhile, at the other end of the garden, the raspberries still need frequent watering.  If only it would rain occasionally, the nearby water butt might be of some help, but it's always empty these days, so it seems a bit silly to use that in an automation project.  I may have to extend the plumbing of the rainwater recovery system through the back of the garage and use that...  So there's a use for the single channel USB relay board, right there.

Then there is the issue of the pots.  The terrace is positively littered with pots containing flowers, which also have to be watered.  So that's another possible automated system.  The problem there is that the layout is liable to change at any time, according to the aesthetics of the moment, as sensed by the lovely Jackie.  Which makes laying out the little hoses a bit more difficult than it is for a flower bed.  Maybe leave that one alone for a while.

littered with pots...

...but no hoses

Meanwhile, the garden seat you see in the picture above (and closer-up below) has become a project once again.

It used to be a bench, but the wooden bits rotted away so to avoid throwing it away completely, I replaced the wooden bits with shorter wooden bits made of left-over decking, and made it into a single seat.  The enormous weight of this chair has turned out to be quite an an asset when you want to tie something down.  Like the garden umbrella, for example.  Or possibly a dirigible of some kind.  Anyway, now, it seems, we need a bench again, to go on the newly-paved corner you can see behind it in the picture above.  No problem, I've got all the wooden slats of the old spare room bed (no longer required since it was built specially for the old house and is now too small) which will do quite nicely.  Although they will have to be painted - grrr.  Incidentally, if the new paved area looks a teensy bit off flat to you, well spotted - and I have new found respect for people who can do better than that with slabs on (left over from the terrace) sand.  I can't!

The poor old trampoline has been somewhat repurposed, too, since I gave up my front flip adventure.  I chopped up all the fencing we removed when the terrace was build and used it to make a sort of den for Layla, by enclosing the trampoline.  The tramp base moves around a fair bit when you jump on it, so the fence has to be quite flexibly mounted - basically it stands on the concrete pads, and there's only only one attachment per panel, and a strap to the next panel.  

I don't know how it will stand up when Leo gets going on there though.  Bits may well fall off.  Anyway, it's only a prototype.

I also made a hinged door using some stainless pipe clips for the pivot and a bit of old bike cable to hold it up.  For some reason I find the separation of axial and radial loads in this arrangement strangely satisfying. 

hinge

It's probably just me though.  

Anyway, it's only a prototype.

Completely off my Roca

I can now say definitively that I am not a fan of Roca.  I've only done what they wanted - replace the complete inlet valve system with a brand new one - and it was honestly the most inconvenient and generally hard-to-complete job I've done in about 30 years.  It's not all Roca's fault, obviously - some of the inconvenience is because the downstairs loo is a narrow little room, and some more is due to the way the thing was installed by the house builders/plumbers.  Here's a picture which I should have taken at the beginning:

restricted access

It's impossible to see this view directly - you have to hold your phone upside down at floor level pointing upwards, and guess what it's pointing at, to get this.  And then straighten it up and crop it in GIMP (like Photoshop for Linux) to make it look nice for you, dear reader.  It shows the isolating valve attached directly to the white plastic tube of the inlet assembly, and right at the top you can just see a bit of the white plastic nut which holds the inlet assembly into the cistern.  For a sense of scale, the copper pipe is 15mm diameter, so you can see that the gaps around the isolating valve nut and the plastic nut are pretty small.

The monstrous crow's foot wrench, when it arrived, turned out to be just as shiny as the 50 quid Facom one, with nice bevelled edges to boot.  It is also seemingly proportioned for undoing the wheel nuts of tanks (quite unlike the dainty object in the picture in the advert) but it does actually fit in under the cistern (just), and it did eventually do the job of loosening the valve nut, one sixth of a turn at a time.  Of course, you can't just slide the spanner off and reposition it, you have to wheedle it off and coax it back on at funny angles to avoid all the obstacles.  And if your socket driver has a ratchet, it it guaranteed to ratchet when you didn't want it to, and make it impossible to achieve the right position, so that you have to ratchet round the rest of the 300 degrees - which you have to do in a different space altogether, and then find your way back to the nut somehow.

monstrous (but shiny)

This must all done while clasping the loo in a kneeling bear hug, with arms feeding around the sides. In this position you can actually touch the nut with one hand, but you can only hold the socket driver with the other one, so you can't apply any real torque. Alternatively you can lie on one shoulder, with elbows about the ears, down one side of the toilet.  In this position you can use two hands on the spanner, but it's not possible to either touch or see the nut you're trying to undo.  Of course you can't switch between the two while holding the  spanner on the nut, and you have to be wary at all times of letting the monstrous crow's foot spanner fall onto the delicate ceramic of the toilet itself.

Then there is the plastic nut which holds the assembly into the cistern, which, of course, is a different size.  I had entertained the fantasy that since it's a plastic nut, it wouldn't be very tight, and I'd be able to loosen it without a special spanner.  Sometimes I am unaccountably insane!  Of course I couldn't - and the access limitations are even more severe.

At this point it became obvious that a custom-built special tool was needed.  Fortunately, I was able to come up with this:

special tool #387

...which is a 26mm box spanner, chopped to bits with an angle grinder, and welded onto one of those "stretch" cylinder head bolts you have to replace every time you remove them.  I still don't really understand why they can't be reused.  And I certainly don't approve of throwing them away.  So, I keep some in a box, for those occasions you need an 8mm rod about 8 inches long with a flanged hex head on one end.  Like now.

In practice, this tool worked so well that I may have to make another one to use instead of the crow's foot wrench.  For Roca close-coupled loos, it's the dog's bollocks - and I can save the crow's foot wrench for loosening the wheel nuts of tanks, if any should come my way.

So here's the reason for all my efforts, once it had been successfully extracted:

cause of all known grief

It's meant to be white, but that's what happens if you feed it with muddy water for a few years. The little thing in front is a flow limiter, which normally lives in the bottom of the inlet pipe and looks like this close up (new one shown for clarity):

tiny little slots

The idea here is that if you have tons of mains water pressure, this thing limits the flow rate of the water by making it go through the tiny little slots you can see here. Or if you have muddy water and low water pressure, the little slots block up and the flow is limited to nothing at all, which is a great success for the flow limiter, but a bit of a failure for everyone else.  The correct solution (in this case) is just to throw out the flow limiter altogether, since it was never actually needed in the first place.  Which you could, in principle, do without removing the whole assembly from the cistern; but in practice you can't move the feed pipe out of the way, so you do have to take it all out. And thus you do need the special tool after all.  As if I needed any justification.

Armed with my special tool, the tank wheel nut spanner, and a lifetime's experience condensed into a few short hours of painful, noisy struggling, I threw the whole thing together again in a tenth of the time it took to dismantle it, successfully bringing the whole sorry Roca saga to an end, for now. 

Elsewhere on the estate, our efforts to keep the neighbourhood's 1,276 cats out of the back garden to give the birds a chance have taken a new turn.  My efforts to fortify the gate having proved inadequate, we have acquired a remote control animatronic snake, which I think might just do the trick.  It is modelled on a rearing cobra (with fangs out) and it can go forwards in a curve to left and right, and backwards in a random direction, and works quite happily on tarmac.  At the same time its eyes glow, and it makes an evil hissing noise.  All that remains is to fix it up with a PIR detector and a remote power supply and we're there.  It can hide under the camper van, overlooking the gate, and I'm pretty sure it will scare the living shit out of the cat from number 12, which seems to be the only one left in the race now.   The only problem is that we really need a surveillance camera and some sort of recording device to capture the triumphant moment when we finally get the upper hand.  Can it be done with an old mobile phone and a Raspberry Pi?  Hmmm....

Plumbing the depths

Obviously one can't have a downstairs loo with attitude for long without giving some thought to fixing it.  Unfortunately I already have some experience with the loo cisterns in the house.  They are made by Roca, who like to think of themselves as an upmarket company, so they have taken it upon themselves to reinvent everything in their chosen field.  So although the cistern looks and works pretty much the same as everyone else's, all the bits are incompatible with "normal" ones.  Additionally, the assemblies inside are designed to be built in a factory, and never reopened.  It's so much less work to replace the whole unit, and throw the old one away!  So a slight dribble somewhere means swapping out the entire inlet or flush unit at a cost of about £25, instead of replacing a soft washer for 10p.

Needless to say, I don't intend to be constrained by the wasteful intention of this wanton business strategy.  I fully intend to refurbish my inlet valve assembly - but to be on the safe side, and minimise the downtime while I explore where no man has ventured before, I bought a new one anyway.  The one in the main bathroom sticks occasionally and needs a hearty whack to make it wake up, so hopefully I can rotate them round and keep a refurbished one in stock ready for the next trivial failure.

Whatever happens, I need to be able to remove the inlet valve assembly, which means draining the cistern and removing the inlet pipe from underneath.  To my great surprise, the house builders did actually fit an isolating valve under there, so the rest of the house can go about its business undisturbed while this happens. Hoorah!  But unfortunately, it also means that access to the pipe union is extremely constrained.  It's the bit with the writing on in this picture...

no room at the inlet

Plumbers use a special sort of spanner to solve this common problem - and I have one!

plumber's tap wrench

too floppy to contemplate

  Alas, mine is for imperial tap fittings, and doesn't fit 15mm pipe compression nuts.  In fact I couldn't find the right thing anywhere; the most common offering seems to be a sort of floppy self-adjusting thing that takes up a lot of space exactly where you don't have enough.  I actually have one of those as well, but it's so horrible to use, and generally unsatisfactory in every way that I didn't even try.

In general garage engineering, the tool of choice for such a challenge would be a crow's foot wrench, which is just an open-ended spanner with the handle sawn off and a square hole through it to take a socket extension. So I had a look at those on the world wide vending machine...

gobsmacked, actually

Wow! The top end of the market seems to be one made by Facom, and as you can see, it's very shiny and polished, which I suppose goes some way towards explaining the price; a truly vertiginous £51.95.

That's a bit more than I was expecting, to be honest.

No matter, I found one made by Kennedy for £5.99 Inc VAT  (Special Offer - was £6.99 14% off!) at the Zoro shop.

Obviously the shiny-ness isn't in the same league, and it doesn't feature subtle stress-relieving notches to protect the corners of your nuts (oo er!), but they promise that it's made of proper chrome-vanadium steel, and it's much more my sort of thing, price-wise.

more my sort of thing

Incidentally, neither picture actually shows a 24mm wrench.  The square hole is 3/8in in both cases, so the gap between the jaws in these pictures is somewhere between 11 and 15mm, I'd guess.  Or to put in another way, the pictures are about 100% wrong.

On top of that, the Kennedy one offers the following somewhat disturbing "technical drawing":

This doesn't even make sense on its own, let alone as a description of the article in the picture.  It's wrong in almost every conceivable way.

But... £5.99 Inc VAT, and who need a technical drawing anyway?

I'm still waiting for this to arrive, so that I can get at the cistern and fix the old unit (which probably just needs cleaning). Watch out for updates.




I'm getting a bit concerned that all my recent blog posts have been rants about the price of things.  Have my horizons been drawn so near?  No, of course not.  I'm also reading a fascinating book about consciousness from a neurobiological perspective, called "The Ego Tunnel - THE SCIENCE OF THE MIND AND THE MYTH OF THE SELF" (Thomas Metzinger), and I'm learning Italian on my phone, as well, which I think is surely deserving of a smug emoji, if only such a thing existed.  So I guess the unnecessary emphasis on value-for-money purchases must just be a consequence of poor editorial judgement.  Or maybe it's a indication of a generally cheeseparing attitude to life.  But if that's the case, I'd like to point out right now that of all the things I don't mind spending money on, cheese is definitely in the top three.

And I'm keeping quiet about the other two.

Incidentally, the bird feeder had a visitation from a squirrel the other day.  I spotted the little chap standing on the top, and he spotted me, and there was an impasse; then he decided that since I was indoors and he wasn't he would go for it anyway.  He went out along the horizontal part and then down the outside of the goldfinches' sunflower kernel feeder, leaving one back foot clutching to the ring it all hangs from.  He didn't seem to be able to get any sunflower seeds (not being equipped with the goldfinches' specialised beak) so he had a go at gnawing the plastic instead.  At this point I tried to get a picture, but before I could, he actually fell off, in a highly floundering, legs waving everywhere, most inelegant and highly amusing way!

I've never seen a squirrel fall of anything before, so I'm regarding it as a bit of a success for the design of the birdfeeder.  The squirrel seemed quite OK afterwards, and flounced off across the lawn with all the grace one normally expects from a squirrel.  I don't think he'll coming back though.  Too embarrassed, I reckon.

Welding again

Well, my welding helmet turned up very promptly, but to my surprise, the blue lightning design also features (in a ghostly, slightly spooky way) those pesky skulls!

pesky skulls, looming

Actually I'm getting to quite like them, even though I don't get the connection with welding at all.  The lightning makes perfect sense for arc welding, obviously, and I could follow through transforming metals towards some alchemical symbols, maybe, or possibly even a few runes, but the skulls -  maybe it's to do with defying death in some way?  Not really how I approach welding.  Now if they printed the skulls all over the trampoline, it would make a lot more sense...

Anyway, the house recycled water system repair turned out to be a big flop - when it rained recently and the tank filled up a bit,  the controller switched back to using stored water, pumped a load of crud up from the tank and blocked the inlet of the downstairs loo.  Now it takes several hours to fill up; a performance so leisurely that it borders on the complacent.  Not right at all.  When all's said and done, one doesn't want attitude from the plumbing, does one?

So it seems I will have to get into the tank again, and set the float switch a bit higher.  Which seems like a good reason to weld some stabilising bits onto the paved-tank-cover lifting wheel-o-tron (TM)  to stiffen it up a bit and keep the main rails upright when the full weight of the paved cover is being supported by the wheels.  Anyway, I had to try out the new skull hat.

Which is great!  My welding has instantly been transformed, by the miracle of being able to see through the welding mask, from this poor specimen:

crap welding

featuring lava flow-style blobbery, spatter, and voids, to this:

pretty good welding actually

...which really isn't too bad at all (apart from being out of focus, sorry).  For MIG welding.

Of course, I've long held an aspiration to get hold of a TIG welder, which is like gas welding but with an electric arc instead of a flame.  You get to control the filler rod yourself though, unlike MIG welding.
At its best, TIG welding can be genuinely beautiful, like this:

or these:

partly because of those amazing colours you can get welding stainless steel in different conditions.  Incidentally, for the pharmaceutical industry, the only acceptable colour for a weld in stainless is steel coloured.  So they have to settle for this sort of lovely:

and hopefully spend their time complaining about the bit that has only been tack-welded in place. But then I discovered laser welding, which is like TIG but with a laser!  Here's the advert piece:

Ideal for making steam engine boilers, apparently.  Alas, the laser welder hasn't made it to the hobbyist marketplace yet, and they cost a great deal of money.  I'll just have to wait for someone on YouTube to show me how to make one out of a broken microwave and a CD player (or something).

And in the meantime, go back to wishing I could justify a TIG welder - probably at a cost of about £500.  Which I can't, let's face it.  Unless I can think up a suitable project...

No more Mr. Bouncy?

I had hoped to be posting a stirring story of complete recovery from the front flip incident, but sadly, I can't yet.

It's three weeks since the tragic day, and progress towards my customary state of vitality seems to have stalled at a point where there's still a bit under my shoulder blade which hurts, sometimes quite a lot.  It's altogether somewhat unsatisfactory.  I may have to seek professional advice.  After all, people have been telling me that I should seek professional advice for years.

Fortunately I have recovered enough strength and mobility to use the MIG welder, so I have been able to do some useful things.

Our 5 year old house has a trendy rainwater collection system which collects all the rainwater from the house and the garage and puts it in a big tank under the terrace.  Along with anything that washes off the drive, because they (wrongly) connected up the land drain too - Grrr!  Recently, following liberal use of the newly-commissioned automated garden watering system, the tank ran dry, which resulted in unhappy noises from the pump in the garage.  That's not supposed to happen; it's supposed to detect an empty tank and switch over to mains water automatically.  Obviously this situation necessitated a look at the whatever is supposed to detect a low water level in the tank.  Which is located under the newly paved terrace.

Fortunately, we thought of that when we had the terrace built, and bought a very large (and very expensive) aluminium tray to hold the paving section over the tank so that you can lift the whole section out, for just such an eventuality.  Except that even Dales, who can deadlift at least 130kg, can't lift even one end of it with the the little T-handles provided.  So it needs a special tool...

After much pondering I made two of these out of some of the the rusty old Dexion which used to be the custom slope-levelling car ramps at our old house:

some rusty old Dexion

The long bit bolts down onto the aluminium frame with the paving in it, and you can lift the whole kaboodle by levering the wheels underneath by rotating the short bits until they are alongside the long bit, thus:

wheel, wheel...

Then you can wheel the whole thing away.  This can all be done single-handed by a half crippled ex-trampolinist with a sore back, or even, I suppose, an able bodied person, if that's all you've got.

Here's a close up of a corner.  I had to weld the little tab near the two nuts, because there's no room for a bolt underneath when it's bolted down and the tray is in its holder (first picture).   Apart from that it's all just big Meccano.

cornered

The next challenge was getting the top off the tank - it unscrews.  And it's tight.  So, some more rusty scrap iron, some more welding, and another tool appeared:

handle with care

I couldn't operate this by hand, despite the generous length of the handle, but fortunately it's short enough to get a leg over, which did the trick.  Phwaaaah!

Inside, the 150mm inlet pipe and the gauze filter were literally half full of solid sediment - which explains why the tank was empty.  Most of the incoming water just went serenely on by, straight into the overflow pipe.  I made a half pipe to temporarily replace the gauze section so that I could pressure-wash the poop out without it all going into the tank - which necessitated another special tool to put the half pipe in place (about 1.5m down the hole).

Here it is (on the right), along with yet another tool for scraping crap out of the bottom of the manhole.

some more rubbish

Hang glider aluminium tubing, Dexion offcuts, exhaust clamp parts, leg piece from the old ramps, cable ties, plastic drain pipe.

Eventually I got down to the float switch, which is supposed to be suspended 120mm above the bottom of the tank so that it hangs down when the tank is empty, and floats up when it isn't.  As far as I could tell, it had never actually been installed - just thrown in there with its 5m of cable.  So it was just sitting at a jaunty, and completely misleading angle in the mud on the bottom.  I screwed a hook into the tank side, hung the switch according to the installation manual (it's written in Dutch, but that's not a problem for Google translate), coiled the excess cable up neatly, put the gauze filter back in, and the job's a good 'un.

Why are builders so useless?  They installed 18 of these systems in this road alone; you would have thought that it was worthwhile for someone to spend a couple of minutes at least looking at the pictures in the installation manual.  Incidentally they also fitted the wrong type of pressure vessels for rainwater, and they all rotted away and flooded peoples' garages within a few years.  Rainwater is not like mains water these days, it seems.  Who knew?  Not the builders, evidently.

Still, it's good to get the old welder out after such a long time.  I'm glad I'm not trying to build a car chassis though, because I'm really rubbish at welding these days.  I basically can't see what's going on at all.  I think it may be time to treat myself to a modern self-dimming helmet.  Obviously there's a lot of choice, from the rather gorgeous, at a mere £594.48 (+ £11.95 delivery):

gorgeous

...through a whole raft of skulls...

what is it with the skulls?

...and eventually, to the seemingly somewhat ridiculous...

er... what?

Yes folks, it's an auto-dimming leather hat, presumably specially created for fans of

Or maybe just for those on a very limited budget, because this little number retails at a rather unbelievable £11.59 (postage free).

I think I'm going to go for something like this, for £27.50:

It costs £3 more than the same thing in plain black, but I like the zappy lightning idea, and blue is still my favourite colour.  And after all, you only live once, don't you?