Pinblock glassing

Stephen Grattan lostchordclinic@ameritech.net
Tue, 11 Oct 2005 10:06:28 -0700 (PDT)


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Hi,
 
Usually if any at all makes it around the corner it is only at the inside edge of the flange.  I have found most of them to be a clean fit unless there are 'dips' at the edge in the pinfield. In my experience the little bit if deflection has not altered the fit.  You are also correct in stating that the screws should be used.  I left out that detail.  I use screws and the clamps to be sure nothing moves. Thanks for the correction!
 
Steve Grattan
Lost Chord Clinic

A440A@aol.com wrote:
Steve writes:

<< I have been using West system 105/205 and the microlight filler for years. 
I mix the epoxy up 

according to the instructionsand add the microlight filler until it is a 
little thinner than peanut butter (creamy!!). Spread the mixture on the narrow 
edge of the block and put in place. Clamp it to be sure it stays where you want 
it to be and leave it sit overnight. Wipe off any gross amounts of squeeze 
out.

The next day - remove the clamps and teh block come right off. The Saran 
Wrap will peel off effortlessly. Any epoxy that worked around to the pinfield 
can easily be sanded off. >>

Greetings, 
If there is expoxy working into the pinfield, then the block is not well 
fitted to the underside of the pinfield. I think it is equally important 
that the block be fitted to not only the flange, but also to the underside of the 
block. I have seen an extremely well done flange/block fit go out the window 
when the screws were tightened. This is because the block has been "warped" 
to the underside of the pinfield and the distortion alters the flange fit. 
If using epoxy to fit a flange, I suggest that the block be held in place 
with the screws instead of clamps, but before any of this, make sure the 
block fits under the pinfield as well as the flange. A poorly fitted block is 
responsible for 1 cracked plate in a Steinway B that I know of. 
Regards, 



Ed Foote RPT 
http://www.uk-piano.org/edfoote/index.html
www.uk-piano.org/edfoote/well_tempered_piano.html

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