That's "catchers" as in backchecks? butt felt or butt cushion works... David i. ----- Original message ---------------------------------------- From: "Michael Gamble" <michael@gambles.fsnet.co.uk> To: "gordon stelter" <lclgcnp@yahoo.com>, pianotech@ptg.org Received: 9/13/2005 11:09:53 AM Subject: RE: Hammer hanging glue and replacement butts for uprights. >Hello Thump >What's a "cather" and what should project down from it? Is the little felt >square a "butt cushion" or something in place of a "jack slap rail"? Is it >something I might come across in the UK? >How infuriatingly intriguing!! >Michael G.(UK) >-----Original Message----- >From: gordon stelter [mailto:lclgcnp@yahoo.com] >Sent: 13 September 2005 16:55 >To: Pianotech >Subject: Hammer hanging glue and replacement butts for uprights. >I just removed some of Wally Brooks' Abel hammers that >I was stoopid enough to hang on a crappy set of those >Pratt-Win butts a few years ago. The butts were so >poorly drilled that a LOT of shank-bending was >necessary, so I decided to replace them with the >Tokiwa ones. > It seems to be a "white" glue, like Elmer's, or >white Titebond. I very much liked the fact that >putting my elecric hammershank bender up near the >hammer heads softend the glue enough to remove them >neatly. > A related question: I already have a set of >Renner upright butts, with the integral spring, but am >reluctant to use them because: >1) The bridle straps are too short. I did a piano >with these recently where the straps were so short >that the bridle wires on the butt had to be bent to be >in front of the backcheck wires. So I drilled a new >hole in the tabs. If I ever use these again, I;ll glue >on my own straps. >2) The cathers don't have the projection hanging down, >with the little felt square for the jacks to bap >against, on hard playing. > I get the impression that these butts are really >only for certain European actions. > Comments? > Thump > >--- Erwinspiano@aol.com wrote: >> >> Dittos David. >> Especially when we are considering how >> many times a set of key >> bushings may be replaced in a high use piano. ie. a >> set of front bushings >> other year on the glissando & heavy use pianos. >> With Pvce it's a miserable job >> to get key bushings out & it is destructive >> ususally removing mortise wood >> in the process thereby changing the nicely machined >> dimensions of the >> mortise. I consider pvce glue for this >> application.......well... .... mal practice. >> flame suit on. >> If this is what the asian pianos use for hammer >> head/keybushings glue I >> wish they'd use something else. It's an almost >> impossible job to get the stuff >> off & I've done this often when the shanks are >> still basically pristine & >> worth reusing. >> We've used cold hide glue for hammer hanging for >> years with great success. >> It's easily reversible & easy to re-hang treble >> hammers to tweak the strike >> line for optimal power & sustain & I do this often. >> It's working time is >> wonderful & strength is plenty. Just make sure it's >> in date. >> Joe thanks for all the great info. >> Dale Erwin >> >> David Love said: "The nicest thing about hide glue >> is the reversibility. >> Removing bushings >> glued in with PVC-E is a pain. Bushings glued in >> with hide glue will nearly >> fall out when saturated with an application of >> water spiked with a small >> amount of the surface tension reducer of your >> choice. Hammer heads won't >> click with hide glue if the fit is reasonable and >> if you apply it to both >> parts before assembly (and if you use a bit of urea >> to be sure assembly >> takes place before the two surfaces gel and won't >> bond as well). I've >> recently tried using Franklin's Trim and Molding >> Glue for hammers and it >> worked nicely. But I had to remove a set glued on >> with it and while it was >> no trouble to heat the joint and remove the hammer >> head, I found it >> difficult to get all the old glue off the shank. >> When heated it turns into >> a kind of sticky rubber band that doesn't really >> come off that easily. The >> hide glue softens up nicely and can be heated to a >> crystalline state where >> the poorly named "Hammer Shank Reducer" works >> quickly and effectively to >> remove the old glue without "reducing the shank >> >> >> >> > >__________________________________ >Yahoo! Mail - PC Magazine Editors' Choice 2005 >http://mail.yahoo.com >_______________________________________________ >pianotech list info: https://www.moypiano.com/resources/#archives
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