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Forum topic by MrMeasureTwice posted 11-22-2011 06:10 PM 1160 views 0 times favorited 4 replies Add to Favorites Watch
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123 posts in 2388 days

11-22-2011 06:10 PM

Topic tags/keywords: question

I was looking online at different wood suppliers. One of them list their Mahogany like this;

4/4 Genuine Mahogany 10 Board Feet

What does the 4/4 indicate?


-- -- Jim “Mr. Measure Twice” Marchetti --

4 replies so far

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198 posts in 2631 days

#1 posted 11-22-2011 06:37 PM

4/4 means 1” nominal thickness, usually before surfacing. 5/4 is 1.25” nominal, 6/4 1.5”, etc. I’ve found for S2S (surfaced 2 sides) it usually comes in around 7/8” actual thickness.

-- Perilous to all of us are the devices of an art deeper than we ourselves possess. --Gandalf the Grey

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6910 posts in 2566 days

#2 posted 11-22-2011 07:23 PM

As David said, it is the thickness of the board they are selling, measured in quarters. Four quarter, or a 4/4 measurement, indicates the board is 1” thick. More than likely it will actually be anywhere from 25/32 to 15/16. Good luck.

View Dave's profile


37 posts in 2982 days

#3 posted 11-22-2011 07:28 PM

If you order 4/4 and have it milled by the lumber supplier it will come out to be about 3/4” actual thickness. Just a heads up. I had to learn the hard way.

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123 posts in 2388 days

#4 posted 11-22-2011 07:29 PM

Ah, so simple, yet after 7 years of wood shop, I don’t recall any of my teachers telling me this… go figure.


-- -- Jim “Mr. Measure Twice” Marchetti --

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