----- Original Message ----- From: Tom Driscoll <tomtuner@mediaone.net> To: <pianotech@ptg.org> Sent: Thursday, August 09, 2001 10:57 AM Subject: Re: hinge pins > Dave, I would get the largest pin that will go in the hole, and put a small > bend in the middle. It will go in tight and stay in and only you will know! Don't sweat the small stuff ! > Tom Driscoll > ----- Original Message ----- > From: Dave Nereson <dnereson@dimensional.com> > To: <pianotech@ptg.org> > Sent: Thursday, August 09, 2001 1:52 AM > Subject: hinge pins > > > > A customer has a 1925 Mason & Hamlin 'A' and the hinge pins got lost. I > > tried successively larger drill bits in the hinges to see what size they > > should be and came up with .140". The ones that were in there were .136" > > (maybe .133" since I don't see .136" in the catalogs) and too loose -- > they > > vibrate their way out of the hinges when playing. The hardware store had > > brass rod in .125" (1/8") and .156" (5/32") but not 9/64", which is close > to > > the .140" I need. > > Schaff does indeed have a .140" pin, but APSCO doesn't. They both > have > > a .117" and a .150", and both have a "Steinway" style pin (.144" in the > > APSCO catalog; no diameter given in the Schaff). Then Schaff has a > Yamaha > > pin, but gives no diameter, and APSCO also offers .104", .125" (1/8"), and > > .133", one of which could be the Yamaha size, but they don't say. I've > > encountered Asian pianos with hinge pins that are .157" and .197" > (probably > > 4mm and 5mm, since they're metric, I presume) but neither supply house > > offers these. And it can take 2 months to order them from Korea via > > California, which I've had to do. > > Schaff doesn't seem to have trap pins, but APSCO does have some at .155", > > which could be used for the .157", I guess. > > But why all the disparity? Why can't one or both of the large > suppliers > > offer all the sizes, metric and "standard", and give diameters for all the > > pins? Haven't the two merged now? Didn't Schaff buy American or vice > > versa? Why do they keep two separate catalogs? Just put everything in > one > > book so we don't have to go back and forth, seeing who carries what and > who > > has the better price, and who has "the good kind" of bushing cloth and who > > has "the cheap kind" of bridle straps, or whatever. I know this is > endemic > > to the capitalist/consumer system, but it's also a time-waster, whether > > you're ordering a couple hinge pins or a whole slew of stuff for a rebuild > > job. > > > > --David Nereson, RPT > > >
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