HI all --
If you are going to want a flat layout, use OSB or its cousins. Even 3/4"
plywood will sag under its own weight. However, if you are going to use
the cookie cutter method of construction with grade changes, then OSB and
its cousins are too rigid. I have 7/16" chip board with a high glue
content that I recovered from housing construction in the area being used as
sub grade. It will NOT bend even when you want it to!
My favorite form of construction is using ripped plywood on edge for framing
(stringers and long members) with 1/4 to 3/8 inch plywood cookie cutter
surface and sound board on top of that, then track structure. However, for
just plain table top (no cookie cutter), that OSB/chip board is hard to
beat.
Having said all that, my current layout is built with 2x4 framing and
plywood / OSB. I chose this because it has to be self supporting (no
attachment to the house other than its weight) and also be able to support
ME when I work on it!
Have fun!
Bill Winans
Prescott Valley, AZ
Jeff --
Bill Lane is correct. Never, EVER, use any kind of fiberboard without a
subbase. In particular, while Homasote has many desirable properties, it is
basically a paper product. Over time, it will sag between supports, even if
pre-sealed. Best advice I can give you is to cover your benchwork with 5/8"
(or
thicker) plywood, then glue and screw your Homasote atop that.
Dick Karnes
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