Pete Dunk
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Posts posted by Pete Dunk
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Thanks for the link Leo; checking the number off my Lachenal the nearest font I can find is called LTC Bodoni Bold.
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As for one of my lachenals, it misses the lachenal label (who cares). Once I thought to put a new old label in. But if I would, what kind of paper and ink would lachenal have used?
I cared enough about my badly disfigured Lachenal label to want to replace it. Oddly enough I only printed and fitted it today. I printed it on standard printer paper with an inkjet printer. It looks a bit bright and new but the idea was to have the maker's label in the concertina, not to pretend it was original. I've kept the fragments of the original label that will stay with the instrument. The serial number is still intact and legible, I've cut it out of the old gauze and it will be fitted to the new material which will be anything but sympathetic in an historical sense, being a modern material which is bronze in colour.
The label is there to acknowledge the maker, nothing more, and I think that's quite a nice thing to do.
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Utterly fascinating, even more so considering Rich Morse's comment that both he and Marcus use entirely different methods to those used by Bob. The ingenuity of skilled craftsmen to solve manufacturing problems is a constant source of wonder. I can only echo Theo's sentiment regarding the generosity of the professionals (himself included) who contribute so much to this forum.
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Dave,
something I have never seen available is a black pressed paper to mimic moroccan leather. This is handy for people who want an all leather look but bellows paper style construction. I appreciate it does not need printing but a supply is difficult to find in my small pond so possibly others would have the same problem. Those materials I have found through the book binding industry here were plastic based and slightly too thick...
Chris
Concertina Connection sell black pressed papers here
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Repairing damaged chamber walls and replacing the damaged gaskets on the left hand reed pan wasn't entirely successful in affecting a proper seal all round. I've now stripped off all of the chamber top gaskets so I can check each chamber wall for level with a straight edge and apply suitable packing before re-gasketing the lot.
Hindsight is a wonderful thing and I've now figured out how I will approach this kind of fault in the future. First strip out all gaskets including the bellows end and clean off the old glue, then check for level with bare timber. This will show up any warping and check the support block heights, they may have fallen off at some time in the past and been refitted incorrectly or need slight packing to compensate for reed pan warp. Then do any necessary packing on the chamber tops to get them level with the bellows frame before fitting new gaskets to the whole end.
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The Wheatstone I've just acquired has the dot and cross design but smaller than Lachenal's and gold on black with a gold line around the trapezoid. All the papers seem to be the same size too, rather than the sightly deeper papers on the bellows ends. Concertina Connection has a few design choices but I don't think any are different to the ones you mention.
If you click on the Wheatstone pic below it will take you to a small gallery of pictures of the concertina which will be my next refurb project.
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A very good point Theo, thank you for mentioning it. I'll be sure to work out clearances before re-padding in future.
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Does PVA hold up under methylated spirits + shellac?
Yes indeed it does.
Edited to add: I think you should make a trial batch of your wood/glue mix and try the polish out on it. PVA may well repel the shellac, I don't know - I've never tried that kind of repair.
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So my first thought is to square off the gouge and fit a mahogany chip in its place. Then french polish. The damage is just big enough that it may merit the chip...
That's what I meant, the handle is quite light in colour and Honduras mahogany would be a good match. I think a repair of this type would be almost invisible if you match up the polish colour. When I mentioned planing off the excess I was thinking of the tiny thumb planes used for delicate work on musical instruments. PVA will resist sweat no problem so the repair would be permanent. A mixture of sawdust and PVA glue is ok for very small repairs and cracks but I wouldn't use it in this case. That's just a personal opinion of course.
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For the bushing board I would use a scrap of birch ply, very stable. Depending on your woodworking skills I would repair the damage on the hand rest by squaring it off and leveling with a sharp chisel and then let in a small piece of mahogany, use PVA or Elmer's glue and cramp in place until the glue dries. Plane, file and sand to shape then touch up the polish.
If you can't lay your hands on a small piece of mahogany try chatting to a luthier or guitar repair-man, they're bound to have a few bits of Honduras mahogany lying about.
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I hadn't thought of pulling the pads apart and remaking them but I'll file the info for future use. Do your pads work well Dan? I would have thought that the felt was needed to allow the leather face to bed into the hole in the padboard to get a proper seal.
I didn't think you were preaching btw, just more experienced than me.
The leatherwork on the bellows was mostly down to my other half but she'd be the first to say that the overlap joints on the bottom could have been better, we both had a go at skiving but we're either not too good at it or haven't managed to work out the proper technique. 
I was delighted with spindizzy's Lachenal label and look forward to the higher res version. When I get chance to do so I'll take a pic of the label on the Wheatstone I picked up recently. I'm waiting for another bag of parts from David to start work on that one....here we go again!
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Here's another pic of the Lachenal that I had trouble trying to post the other day. The four fold bellows are very limiting and may well be replaced with a six fold set before too long, leaving the original newly repaired bellows as a donor set for a tuning rig...
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The USA may be well served with supply houses that sell concertina spares but that's certainly not the case in the UK. Some UK concertina makers may supply spares but none of them advertise the fact so I was quite limited in my options.
To be fair the concertina had suffered with insect attacks and none of the original pads had any felt left in them worth mentioning so I had no idea how thick they originally were. This was my first attempt at repairing a concertina and I pretty much relied on information from the Concertina Repair Manual with regard to technique and used stock parts from a well known supplier with a good reputation. Different thicknesses of pad weren't an option I'm afraid, neither were pads of the exact diameter as the originals or valves of exactly the right length etc so I had to go with the nearest sizes available.
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That's very similar to the remains of my label spindizzy but mine has a line around it that just shows inside the the oval in the fretwork. Other than that, the actual lettering appears to be the same although so much is missing from mine it's hard to be sure. I'm not particularly bothered about historical accuracy to be honest, I just thought it would be nice to have the name on the 'tina. It would be great if you could pass on a higher resolution version. I'll drop you a PM
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The old Lachenal label was in bits and almost illegible, so if any kind Lachenal owner feels like taking a close up high definition photo of the label in their concertina and letting me have a copy I'd be most grateful.
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Re-padding is now finished, bellows patched up and rebound, finger slides re-leathered and new thumb straps made. Amazingly enough the concertina was almost perfectly in tune with itself in philharmonic pitch with the notable exception of of the G above middle C on the pull which was pretty flat. I gritted my teeth and took a diamond file to the reed and VERY slowly brought the reed up to the correct pitch with lots of trials with the tuning meter in between.
There's still quite a lot to do to finish the job off; new bellows papers, end gauzes to cover up her private bits and so on, but she's playing and not sounding too bad at all.
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Welcome to the forum Chris, photos please!
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One end is now re-padded. The old glue was very brittle which made removal and clean-up quite easy. The new pads are much thicker than the original ones and I was quite alarmed at how much arm bending I had to do to get the key heights right before gluing the new pads on. I gave the action board a good old dusting down with a hog brush as I worked my was round and it looks a lot better for it!
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The end gasket is now fully glued in place and I 'worked' it a little to flatten the nap and the reedpan is now a very firm fit but not ridiculously so. I've now decided to re-gasket the other end too before applying the end binding leather, that way the pans will be equally snug and I won't be faced with problems a few months down the road that are much harder to put right! Thanks for the talcum powder tip Geoff, I'll certainly try that on the next end.
Shining a bright light down the bellows highlighted enough problems for me to decide to reinforce all of the gussets as well as rebinding the edges, much of the leather is pretty fragile. It's a fair bit of work but the materials will cost about thirty pounds in total and I should get quite a few years out of the bellows before they inevitably need complete renewal.
I've started the re-padding and that will keep me busy until the gusset patches arrive.....
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The remaining valves have been fitted. After that I replaced the missing strips of chamois gasket to the reed chamber tops.
While the gum arabic was drying I cut and glued in the new chamois bellows end gasket. It was only glued around the top edge so that I could check the fit of the reed-pan before gluing the rest down.
The reed-pan was a very tight fit indeed and needed no extra packing out so I glued down the rest of the gasket to the bellows and opened up the holes around the edge for the end bolts. I'm waiting until tomorrow before refitting the reed-pan but I've fitted the end back on to keep it stable and allow the glue to dry fully under a bit of compression.
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The reed shoe wasn't a good fit and the hole in the reed pan was clearly visible with the shoe in place so there was undoubtedly an air leak; whether that small air leak caused any problems at all is unknown. I didn't think of using brown paper but I've filed this little nugget of knowledge for the future, in the meantime I hope the scrap of bellows leather does the trick.
The long awaited bag of spares containing new pads, thumb-strap kit and stuff to patch the bellows before rebinding arrived this morning, I also got an email from David Leese letting me know that the first package has been returned to him marked 'not known at this address' which is not really surprising as he'd forgotten to include the village name and the postcode in the address!
I'll be finishing off the last dozen or so valve replacements this afternoon and then moving on to the chamois gaskets and bellows patching, I hope to post more pics of the progress in the next couple of days.
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That gunge looked suspiciously like chewing gum!
Short of sending the remains off for analysis we'll never know, and although I would be interested to know what it was I'm not interested enough to pay for the privilege. Not a lot has happened this week because I'm back at work after my holiday although the reeds and shoes are now all gleaming and most of the valves have been replaced. I would have finished them this evening but it's been a long day and I like to be in the right frame of mind when working on the 'tina, I'm sure the results will be better if it's pleasurable tinkering rather than a must do chore.
The good news is that David Leese has posted out new spares as a replacement for the missing package, it should arrive tomorrow with a bit of luck. I'll be able to start on the bellows then, a prospect I find quite worrying, never having done any work with leather.
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I'd be interested in this material too David if you wouldn't mind posting or PMing the details.
Pete.
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Work progressed in spurts again today, most of the reeds and shoes are now cleaned because the fibreglass pencil refills arrived this morning. One reed pan is now fully re-valved and the last dozen or so were done by my other half Sally who enjoys rolling her sleeves up and having a go at almost anything.
Having watched me on the sly while I figured out the best way to do the job, she waded in and did her first one like an old hand; by the time she'd reached the last one she was working at least as fast as I had been and added a couple of refinements to the process along the way. Tomorrow I'll leave the other reed pan out with a bag of new valves and with a bit of luck she'll have finished the job by the time I get back from the pub!
Before long I'll have to stop because the spares I need next are in the missing package David Leese posted last Monday. The postal service around here leaves a little to be desired sometimes.
The last package from David that went missing ended up in a village four miles away and took weeks to finally arrive here. By that time a replacement had already been posted to me and I had to send the 'first' one back.
48 Key Lachenal English Concertina
in Instrument Construction & Repair
Posted · Edited by tallship
Pinching an idea from Bob Tedrow's excellent bellows construction thread I cut a strip of timber at 96mm to hold the bellows almost fully open, then began fitting new papers to cover up all of the bellows patching....