[Files] [CAUT] Tool for removing capstans

[Jim Busby]

This is a multi-part message in MIME format.

---------------------- multipart/alternative attachment
Eric,

=20

True. Come to think of it, Carl Teel did a demonstration where he put
sand paper on top of the capstan to see what effect it would have, if
any, on the regulation. As long as the "magic line" was good it didn't
seem to matter.=20

=20

I guess the "picture straitening" side of me wants the burrs gone.=20

=20

Cheers,

Jim

=20

________________________________

From: caut-bounces@ptg.org [mailto:caut-bounces@ptg.org] On Behalf Of
Wolfley, Eric (wolfleel)
Sent: Thursday, July 14, 2005 9:27 PM
To: College and University Technicians
Subject: RE: [Files] [CAUT] Tool for removing capstans

=20

Jim,

=20

It just polishes them. I've never noticed those burrs causing any
problems either by friction or excessive wear on the wippen cushions.
Part of me wants to remove the burrs because it seems like they
shouldn't be there but another part of me says why bother if they aren't
hurting anything. Maybe I've just been lucky though.

=20

Eric

=20

Eric Wolfley, RPT

Supervising Piano Technician

College-Conservatory of Music

University of Cincinnati

=20

________________________________

From: Jim Busby [mailto:jim_busby@byu.edu]=20
Sent: Thursday, July 14, 2005 3:55 PM
To: College and University Technicians
Subject: RE: [Files] [CAUT] Tool for removing capstans

=20

Eric,

=20

Good tip! When you polish with it does it remove the burrs around the
top perimeter, or does it just shine them?

=20

Thanks,

=20

Jim Busby

=20

________________________________

From: caut-bounces@ptg.org [mailto:caut-bounces@ptg.org] On Behalf Of
Wolfley, Eric (wolfleel)
Sent: Thursday, July 14, 2005 9:40 AM
To: 'files@ptg.org'
Subject: [Files] [CAUT] Tool for removing capstans

=20

I finally found time to make some photos of this tool for those who are
interested...

=20

The tool started life as a 3/8" plug cutter of unknown manufacture. It
just says U.S.A. 3/8" on the tool. I think it was from one of those "Do
it" places. Anyway, it proved useless as a plug cutter and sat around
next to the drill press for a few years until the day I spied it while
trying to think of a way to quickly and efficiently remove capstans
without taking the keys off the keyframe. This is how it works. I place
a damper wire set screw (I couldn't find anything that worked better)
into one of the holes in the capstan and place the tool (chucked into my
cordless drill) onto the capstan making sure the screw gets up into the
cutter slot on the side of the tool (photo #2). I then back the capstan
out, remove the screw, throw the capstan into a cup and put the screw
into the next capstan. I know this sounds clumsy and a little involved
but it goes really quickly and it really does take just 10 minutes to
remove a whole set. To insert the capstans, I just do everything in
reverse. Put the capstan with the screw inserted into the tool, put the
capstan into the hole in the key and turn it in. This takes a little
longer than turning them out because you have to be more careful, but is
still fast. I needed a spacer in the tool to keep the tool from going
too far down on the capstan and came up with the brilliant idea of using
a felt plug cut from some scrap hammer felt (photo #1).  After inserting
the plug I wrap some tape around the tool to keep the plug in place.
This serves the dual purpose of spacer and polisher. To polish, I put a
small dab of Flitz on the top of every capstan and spin the tool on the
capstan at high speed (without the little screw inserted of course) and
then clean it off with a cotton rag. It takes 10 - 15 minutes to do a
whole set this way.

=20

Eric

=20

=20

Eric Wolfley, RPT

Supervising Piano Technician

College-Conservatory of Music

University of Cincinnati

=20

Photos at:

=20

http://tinyurl.com/b46fo

=20

http://tinyurl.com/8w2f3

=20

=20

Direct ptg.org URLs:

=20

https://www.moypiano.com/ptg/files/attachments/ae/9d/92/e7/capstantool1.
jpg

=20

https://www.moypiano.com/ptg/files/attachments/5b/61/16/f4/capstantool2.
jpg

=20


---------------------- multipart/alternative attachment
An HTML attachment was scrubbed...
URL: https://www.moypiano.com/ptg/caut.php/attachments/59/04/c9/df/attachment.htm

---------------------- multipart/alternative attachment--