Rather than put punchings on each front pin, I use a little wooden aftertouch gauge. You can make one from a piece of wood like the ones Renner uses to ship shanks. Cut a slit in the end to fit a pin with a bit of slop. Reduce the thickness to 0.050" on a disc sander or the like. Cut a bit from each side, back about an inch to clear natural front pins when measuring sharps. With the gauge, you just slip it under each key in turn, on top of the felt punching. Saves quite a bit of time and hassle over adding and removing individual card punchings. Or, anyway, I think so. I like to see the hammer stop rising when I hear a click (key against gauge), then see the hammer start to let off as I press a bit into the felt punching. Regards, Fred Sturm Newton Hunt wrote: > >snip< > After touch. Put .050" punchings on top of the front punching and > determine how much key movement there is after the jack has lost contact > with the knuckle. There should be none. That .050" is the clearance > needed. > > Newton
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