The let off rack is a little more qualitative. Is the hammer barely brushing, touching softly, touching firmly? And you are trying to get them all to the same place. The let off rack also requires a wider table. The Spurlock jig is pretty quantitative. You can see how much the hammer shanks lift off the rail, or just listen for the click. And it doesn't require a wide flat table. Do it on the piano lid, or bench. I use a small 2x4 ft plastic fold up table from Sam's. No room for a letoff rack on it. I've used both. I feel much more confident and precise with the Spurlock jig which is important to me since I started going for closer let off and drops. It seems easier to use also. And I see more uniform results in the piano. Another caveat, though. If the section you are regulating has agraffes of uneven heights this jig won't work well. You will need to set each hammer individually in the piano. Dean Dean May cell 812.239.3359 PianoRebuilders.com 812.235.5272 Terre Haute IN 47802 _____ From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of AlliedPianoCraft Sent: Friday, June 13, 2008 9:49 AM To: Pianotech List Subject: Re: no hammer rise Dean, I set my samples in the piano as you described below, then regulate the let off and drop on my bench using a let-off rack. What is the advantage of the Spurlock jig over a let-off rack? Al Guecia -------------- next part -------------- An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20080613/26b2415e/attachment-0001.html
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