I guess that's true. Sorting pins for an old block is probably a waste of time since it's not likely that the old holes are uniform anyway. I suppose if you redrill or ream, however, they may be more uniform but the variation in wood compression in each hole from the original non uniform pins might still render the exercise somewhat useless. On a new block that's double drilled I would guess that the holes are quite uniform and sorting might help graduate the torque a bit if that's important to you. I used to mic pins regularly as well as roll them on a flat surface but after awhile I didn't find that much variation and so now I don't really do it. I've gone back and forth between Denro and Diamond and have settled on Diamond pins as they seem a bit more uniform (plus I like their bluing better). David Love davidlovepianos at comcast.net www.davidlovepianos.com -----Original Message----- From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Ron Nossaman Sent: Tuesday, June 17, 2008 9:12 AM To: Pianotech List Subject: Re: Original pin block > Sorting the pins as you mention I think is a good idea. I wonder. I'd bet nobody sorted the original pins, and there was likely more variation in size then than with today's cut thread pins (as I recall from micing rolled thread pins 30 years ago). So the existing holes are neither uniform, nor calibrated bass to treble. Sorting pins could well lessen the probability of putting an undersized pin in an oversize hole in the bass, but in as soft a block as Steinway's, I'd think it's a boarder line return. Ok, I'll quit observing now and go back to work. Ron N
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