But it does hold screws well. It is, after all, made of birch through and through. As such is it is not particularly cheap though I wouldn't call it frightfully expensive either. Yes, it is consistently flat. It machines well though you can pick up nasty slivers if you're not careful. It has been used by many manufacturers for making jigs and templates that have to last a reasonable amount of time and remain stable and accurate during that time. ddf Delwin D Fandrich Piano Design & Fabrication 620 South Tower Avenue Centralia, Washington 98531 USA del at fandrichpiano.com ddfandrich at gmail.com Phone 360.736.7563 -----Original Message----- From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Terry Farrell Sent: Friday, February 18, 2011 5:28 AM To: pianotech at ptg.org Subject: Re: [pianotech] Bottom Board Material So if it is not screw holding ability that makes you favor Baltic Birch plywood, what is it? I know you have written about it numerous times in the past that it is your choice for jigs and other applications. Cheap? Consistently flat? Easy to machine? Thanks. Terry Farrell On Feb 17, 2011, at 11:36 PM, Ron Nossaman wrote: > On 2/17/2011 7:48 PM, Ron Nossaman wrote: >> On 2/17/2011 6:51 PM, Terry Farrell wrote: >>> 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 always liked Baltic Birch for this. >> Ron N > > Oh, and if you're concerned about screws holding, install T-nuts and > bolts. > Ron N
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