Re: Pin-driving fluid I agree that pin-driving fluids improve the ease of driving the pins and also provide a superior tuning feel. We've used natural spar varnish for several years in my shop, and I have colleagues in the area who use shellac. Anytime you use shellac (for anything), it should be freshly mixed. Otherwise, it may never harden. Steve Brady, RPT "The most expert and rapid tuners are... University of Washington possessed of a highly excitable, sbrady@u.washington.edu nervous, and emotional temperament, verging on the border of insanity at times." -Daniel Spillane, The Tuner's Guide
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