[pianotech] Bottom Board Material

[Wim Blees]

Terry

If you have the maple, and the equipment to do edge glueing, I would suggest that. You will, however, have to cover the finished panel with veneer, the same wood as the rest of the piano.

Wim

Sent from my HTC PURE™, a Windows® phone from AT&T

-----Original Message-----
From: Terry Farrell <mfarrel2 at tampabay.rr.com>
Sent: Thursday, February 17, 2011 2:51 PM
To: pianotech at ptg.org
Subject: [pianotech] Bottom Board Material

I will be fabricating a new bottom board for a customer's vertical  
piano (moisture/mold damage). Any opinions on the best material for  
the job?

I suppose some sort of plywood. I am using a hardwood veneered  
gazillion-ply plywood for another project and am surprised at how soft  
it is - I don't think that will be the best thing. My concern is for  
screw holding. I don't know my plywood grades all that well. I should  
think an exterior grade of ply made of yellow pine or something  
similar with one side sanded (the inside side) would do the job well.  
Is there a grade designation that specifies good hard wood that will  
hold a screw well?

Or should I just make it out of a couple pieces of edge-glued (some  
sort of water-proof glue) hard maple? I have tons of that in my shop -  
I would have to make a trip to the lumber yard for plywood.

Comments? Suggestions?

Thanks!

Terry Farrell