Did you notice or note any difference in the ease with which the pins were able to be driven with each one? David Love www.davidlovepianos.com -----Original Message----- From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Ron Nossaman Sent: Monday, April 19, 2010 6:26 PM To: pianotech at ptg.org Subject: Re: [pianotech] Pin Driving Fluid Search jimialeggio wrote: > I'm interested in experimenting with pin driving fluid. I was curious too, so I did. A couple of months ago, I took a cutoff from one of my hybrid blocks, double-drilled four sets of three holes in it, and tried three arbitrary pin driving fluids. The first row of dry driven pins (the control) were at around 175lbs initially. All the fluid driven pins were considerably lower initially. The dry driven pins are still in the 170-175 range. The second row, which was lacquer sanding sealer, are the lowest, at around 100. The third row, which was Danish oil, started out with very low torque, snapping uncontrollably when moved. This was expected, but I wanted to see where it would end up. Today, it's in the 170-175 range and all pins turn quite nicely. Functionally similar to the dry driven, which surprised me. The forth row was a solution of fresh mixed shellac and rosin (sports supply). It started out fairly low in torque, but now it's in the 170-190 range, and turns quite nicely. The readings actually got higher than the dry driven, which also surprised me. So everything I tried (so far) worked about like everything else, in spite of the rather more wide than usual criteria for choice of fluid types. The big difference (so far) is the "settle in" torque range. So it seems to me (so far) that there's an awful lot of smoke being generated in pin driving fluid Neverland. This does *not* surprise me. Maybe 37.2154 years from now, everything but the mythological and universally unobtainable ("Shoulda been here last year. We had TONS of the stuff, but you can't get it now") elixir of torque will spontaneously dissolve the block. It would be fun to be around and see it not happen, except that no one would either notice or care. So my conclusion (so far) is that any sort of sheep dip you can find that isn't obviously or logically outright destructive will probably work about like any to-die-for, unenlightened not eligible, secret handshake, glow in the dark, heal the sick, raise the dead, payable in blood nostrum that unobtainably remains eternally shimmering at the edge of reality like the peripheral Boojums that dart past the doorway when you are looking elsewhere. But that could change. Ron N
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