[CAUT] Reaming block?

[Mark Cramer]

Hi Alan,

short answer; we never ream tuning-pin holes... right idea/wrong application
IMHO.

Our simple recipe:

reverse-grip tuning-pins: one-size over

spare box of two-sizes over "on deck"

torque-test all pins in reverse direction, on completion

spot-pin any that fall below your specification.

footnotes:

1.) We've never had a "viable" pinblock yield unsatisfactory results with
this method.

2.) Our personal experiments with reaming were a disappointment.

3.) The combined effect of powering-out the old, and driving in the new pins
seems to take care of any concerns of residue (pin-block treatment, etc.)
coating the wood fibre.

Your welcome to call Alan, if you want to exchange any further
thoughts/experiences.

thanks,
Mark Cramer
Brandon University



-----Original Message-----
From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org]On Behalf Of
Alan McCoy
Sent: Wednesday, August 15, 2007 10:48 AM
To: College and University Technicians <caut at ptg.org>
Subject: [CAUT] Reaming block?


Hi Folks (at least those of you still out there),

I'm about to repin a not-too-old pinblock. It had 2/0 pins and I'm gonna use
LoTorq 3/0 pins. The block felt fine. I'm restringing because of other
issues with this piano - wildly mismatched bass strings, false beats and
such. I'd like to find out how other folks treat the block before
re-pinning. Anyone ream? With what type of bit?

I have tried reaming with a double-fluted reamer in the past but didn't like
the results. Too inconsistent. I've also just done nothing to the block,
with good results.

Your thoughts would be appreciated.

Thanks.

Alan


-- Alan McCoy, RPT
Eastern Washington University
amccoy at mail.ewu.edu
509-359-4627