Hi, On the coil lifting tool, one should have different tips for the different size tuning pins if you plan on doing a lot of restringing. As I do very little, holding the tool firmly against the tuning pin gets me by. But then that is one reason my tool is larger than the Schaff tool. Joe Goss imatunr@srvinet.com www.mothergoosetools.com ----- Original Message ----- From: "Ron Overs" <sec@overspianos.com.au> To: "Pianotech" <pianotech@ptg.org> Sent: Thursday, January 02, 2003 5:17 AM Subject: Re: Open-Face Pinblock & Stringing > At 7:50 PM -0500 1/1/03, Terry Farrell wrote: > > >I have the coil tightening tool that has a weight on a shaft that > >you bang upwards. I've only restrung a couple pianos with it, but it > >seems as though the edges that should hook onto the coil have > >rounded off and each time you bang the weight, it just jumps off the > >coil. I likely bought mine from Schaff or APSCO. Is there a better > >quality one available? > > We had the same experience with the impact coil lifter from APSCO. > However, we had already built our own in-house tool prior to getting > an APSCO tool. The APSCO tool is basically a good design, but the > lifting lip is too soft and the tip needs to be thinned down at the > top and bottom of the 'C' to allow easier access to some of the > tighter tuning pin fields. If you get a local toolmaker to turn up a > new tip from oil quenching silver steel you can harden it with an oil > quench, and temper it until it just starts to turn from straw to > blue. A good impact coil lifter is the only way to go. > > Alternatively, you could re-grind the lip of the original tip and try > to heat treat it. But the success if this will depend somewhat on the > analysis of the material used. If you've got a lath and a die grinder > you could re-grind the lip without any trouble. For those who have a > lathe but no die grinder, the grinder is a must for rebuilders. They > are the best tool for the initial reshaping of the V bars prior to > hardening. With mounted points they can do some wonderful work on the > lathe, but you must remember to put newspaper over the ways to keep > them free of grinding dust. > > Happy new year to all, > Ron O. > -- > _______________________ > > OVERS PIANOS - SYDNEY > Grand Piano Manufacturers > > Web: http://overspianos.com.au > mailto:info@overspianos.com.au > _______________________ > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives
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