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A variation on this is to use 1/8" clear acrylic instead of plywood.
Push the hammers up to the acrylic sheet and make your marks on the
back side of the sheet. I believe I picked up this idea from Wally
Brooks some years ago at a convention.<br>
<br>
Don<br>
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<div class="headerdisplayname" style="display: inline;">Subject:
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RE: [CAUT] vertical hammers</td>
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<div class="headerdisplayname" style="display: inline;">From: </div>
"Ed Sutton" <a class="moz-txt-link-rfc2396E" href="mailto:ed440@mindspring.com"><ed440@mindspring.com></a></td>
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<div class="headerdisplayname" style="display: inline;">Date: </div>
Thu, 14 Jul 2005 16:04:28 -0400</td>
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<div class="headerdisplayname" style="display: inline;">To: </div>
"College and University Technicians" <a class="moz-txt-link-rfc2396E" href="mailto:caut@ptg.org"><caut@ptg.org></a></td>
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<pre wrap="">It can be done well on the bench, thus:
-Note blow distance in the piano.
-Set up action on the bench in an action cradle.
-Attach bolts (about 1/4"x3") through the action bracket slots.
-Cut strips of plywood to approximate the string planes, bass and
tenor-treble.
-Drill holes to attach the plywood to the bolts, use nuts and washers to
mount the boards at the blow distance from hammer rest line.
-Put masking tape on the boards at strike point line.
-Press old hammers against a stamp pad, then press them against the masking
tape, printing an index of the string spacing and hammer spacing.
-Remove old hammers and replace as in piano.
-It is also possible to superglue a support shelf on the boards to assist
in maintaining hammer alignment.
-If you have lots of pianos of same model, save your index boards for
re-use.
Ed Sutton
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