If bending is the issue. As I mentioned in another post, the lubrication might reduce stress to the lining of the hole. Otherwise wouldn't they call it pin torque fluid? Sometimes there is something in a name. 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 8:49 PM To: pianotech at ptg.org Subject: Re: [pianotech] Pin Driving Fluid Search David Love wrote: > Did you notice or note any difference in the ease with which the pins were > able to be driven with each one? Not really. It's not that there wasn't a difference, but that it wasn't enough to be remarkable, so I didn't really care. Driven pneumatically or with a hammer, the pins go in in either case. I'm more interested, as are you, in the result. Since you mentioned it though, what's driving fluid for when installing tuning pins? I find epoxy to be a nice lubricant for driving bridge pins, but it's a tad less likely that tuning pins will be bent during the driving process without a functionally similar lubricant. I always presumed driving fluid to be for after stringing torque levels, rather than driving ease. Ron N
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