I bought some 3/4" plywood fir for a shelf in my cabinet. I was looking
for something to high the end bands. The store had lost of pine that
looked abuot right but it was 1/2". So I kept going in circles between
isles trying to find the 3/4" pine to put on the end of this plywood.
After about an hour I decided to just grap the piece that looked right.
Turns out the 1/2" solid wood is the same thickness as the 3/4" plywood.
This wouldn't be the first odd measurement I have found like 3/4 is
really 5/8... What am I missing here?
"Then said I, Wisdom [is] better than strength: nevertheless the poor
It sounds to me like the 1/2" wood was mislabeled.
If you're looking for a piece of wood 3/4" thick, you should be buying
1" stock (sometimes called 4/4). They plane off exactly 1/4", leaving
you with 3/4".
Josh may be right about the mislabel. But ply's funny like that.
Depending on where it's from (You never said where you purchased it,
but it sounded like the borg), 3/4 is more like 23/32nds, 1/2 is around
15/32nds (or 12 mm, now I'm getting confused). Bring a tape measure in
with you the next time. You'll be surprised at the variables, even from
sheet to sheet, sometimes. Tom
That's because wood is sold by its nominal dimensions, i.e. the dimensions
before drying and surface-planing. If you buy 1-inch (four-quarter) rough-sawn
lumber, you'll get lumber that is actually one inch thick, or pretty close to
it. But when you're buying lumber that's already been surface-planed, nominal
one-inch lumber has been planed down to a thickness of 3/4". The actual
dimensions of a one-by-two are 3/4 by 1-1/2, a two-by-four is 1-1/2 by 3-1/2,
and so on.
Doug Miller (alphageek at milmac dot com)
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