Depends on the press. Attached is a picture of a manual press. Hydraulic presses are similar; they replace the manual acme screws with hydraulic cylinders. ddf Delwin D Fandrich Piano Design & Fabrication 6939 Foothill Court SW, Olympia, Washington 98512 USA Phone 360.515.0119 — Cell 360.388.6525 del at fandrichpiano.com — ddfandrich at gmail.com -----Original Message----- From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of richarducci at comcast.net Sent: Wednesday, September 12, 2012 6:36 AM To: pianotech at ptg.org Subject: Re: [pianotech] Re. Baldwin hammers How is this done in the factory? Pneumatic clamps? Rick Ucci Uccipiano.com On Sep 12, 2012, at 9:32 AM, Terry Farrell <mfarrel2 at tampabay.rr.com> wrote: > Sometimes it is difficult to manually squeeze them enough, but often not. In the end though, I've always been able to do it manually. As to what pulled it apart in the first place, I have always thought that the glue joint was so poor that they pretty much just fell apart. Now was that because of the quality of the glue, the amount of glue, the prep - I don't have a clue. > > Terry Farrell > > On Sep 11, 2012, at 8:13 AM, Ron Nossaman wrote: > >> On 9/10/2012 2:49 PM, Terry Farrell wrote: >> >>> but for clamping, I simply squeeze >>> between thumb and index finger for the 20 seconds or so. >> >> And you've actually suggested that some of the rest of us are bionic? I haven't spent a lot of time gluing exploding hammers back together, but I haven't come across many I remember being able to do this with. Which brings up the question: If the felt of a hammer is that easy to squeeze back into place, what pulled it apart in the first place? AT'sa pretty lousy glue joint! Then there's the hammer to shank joint. Maybe that explains the attached PDF too, when I had a run of loose ribs in new Baldwins. We have a possible trend... >> >> From a practical standpoint, manufacturing QC has *GOT* to be a nightmare on all levels, and I doubt few if anyone noticed anything at the time indicating this stuff would be a future problem. >> >> Ron N >> <Baldwin gluing ribs.pdf> > -------------- next part -------------- A non-text attachment was scrubbed... Name: Manual press 1 -- web.JPG Type: image/jpeg Size: 101140 bytes Desc: not available URL: <https://www.moypiano.com/ptg/pianotech.php/attachments/20120912/f45e174f/attachment-0001.jpeg>
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