First post, sorry if it is in the wrong place.
I am gluing up 72 inches of 5/4 QS white oak for a desktop. I thought I'd do some reading and came accross the "Get serious about clamping" article in FWW from Nov last year. If I am to believe what it says:
The recommended clamping pressure is:
Glue surface (sq inches) X Required clamping pressue / Force by each clamp= # of clamps needed.
According to the table, red Oak needs flatsawn face needs 900 lbs/sq inch and QS face needs 450. I assume White oak will need the same.
Doing the math, I come up with the need for 81 clamps for FS joints and roughly 40 clamps for QS joints assuming pipe clamps can exert 1000PSI.
This seems like a crazy # of clamps. The article seems to imply that QS boards joined together is a "flatsawn joint" which would imply that I need 90!!! clamps in 72 inches.
Any help is appreciated. Feel free to point out any stupidity on my part.
thx,
dj