[pianotech] First Pinblock

[Dale Erwin]

Dittos John
 
 The block is removed, a bead of Epoxy is placed on the flange edge and the block clamped back into position and every other.


 What does Bead of Epoxy mean? Like a paste epoxy filler?


Dale Erwin R.P.T.


 
  





-----Original Message-----
From: Jon Page <jonpage at comcast.net>
To: pianotech <pianotech at ptg.org>
Sent: Mon, Feb 4, 2013 4:27 am
Subject: Re: [pianotech] First Pinblock


 > ...the block should be fit as if you weren't using epoxy...
 >>Why? I'm not suggesting that it not a good thing to get it close,...

Epoxy should not be a sidestep to proper workmanship. It is making a 
good fit better. I don't apply the epoxy until the last procedure. First 
the block is fitted by chalk rubbings with better than 75% mated. Then 
the block is clamped in place and all the screw holes drilled and screws 
installed. The block is removed, a bead of Epoxy is placed on the flange 
edge and the block clamped back into position and every other screw 
reinstalled. Now that the block is locked in position, the tuning pin 
holes are center punched and the block indexing holes drilled (for 
fitting the block to the case).

Once the epoxy has cured, remove the block, place your pattern on the 
indexing holes, draw your lines and trim on a bandsaw (I fine-trim the 
front edge with a jointer), fit block to case. Proceeding from here 
depends on your tuning pin drilling method, I use a drill press.

That's the way I do it. Drilling and installing all screws secures the 
location and insures against block drift.

-- 
Regards,

Jon Page


 
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