[CAUT] pin-block plugging?

[Mark Cramer]

Interesting thought Marcel, it never donned on me I might be creating a
glue-starved joint with aliphatic resin glue. When I use this stuff my
practice is to coat both surfaces and let it sit for a minute before
assembling, for that very reason.

 

All the same, does it strike you odd that I haven't had dozens of
technicians reply to say "we've had nothing but success with pin-block
plugs" especially technicians from the era when plugging rather than
replacing blocks was the fad. (?) 

 

BTW, I think you're right, a bench experiment would probably solve the
mystery in a hurry.

 

Best regards,

Mark Cramer, RPT

Brandon University

  _____  

From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of Marcel
Carey
Sent: April 30, 2009 7:04 PM
To: caut at ptg.org
Subject: Re: [CAUT] pin-block plugging?

 

Hi Mark,
>From your description, I think you might be drilling too SMALL for the
plug. There has to be a gap. You might just be pushing all the glue out of
the hole and then when you repin the whole plug might turn. Of course after
putting in bigger pins the plug eventually sticks there. I've seen it done
at Steinway factory for a pin that was too loose to start with. If it has
worked for them, it has to work for you too. Maybe you could experiment in
an old piece of block until you find the right combination.
 
Marcel Carey
Sherbrooke 

 

  _____  

Date: Thu, 30 Apr 2009 11:12:26 -0500
From: cramer at brandonu.ca
To: caut at ptg.org
Subject: [CAUT] pin-block plugging?

Now and then I run into a situation where plugging a tuning-pin hole and
re-drilling seems like the only option. IOW, neither an over-sized pin, CA
glue nor an emery paper shim will work.

 

I've tackled this fairly carefully, even using a small portable drill press
clamped to the keybed to get a precise hole, but I never seem to get a good
result:

 

I've used plugs from both economy blocks and Bolduc blocks. The plugs are a
tight fit to the wood, and really have to be driven home. I've used
carpenter's glue.

 

Nonetheless, the results always seem to end up the same. I bore for a 1/0
pin, then end up installing a 2/0, then up-sizing to a 3/0, and often a
4/0!?

 

Anyone have success with this? 

 

Over the years some of you must've plugged and re-bored entire pin-blocks.
What's your secret?

 

Thanks,

Mark Cramer, RPT

Brandon University

 

 

 

 

 

  _____  

Windows Live Messenger vous permet de rester en contact plus facilement-
apprenez <http://go.microsoft.com/?linkid=9650737>  comment!

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://ptg.org/pipermail/caut_ptg.org/attachments/20090501/5416d5dd/attachment.html>