Hi All,
Building some custom door jambs and I’m wondering how important it is to run a series of 1/8″ x 1/8″ kerfs on the back>
I’m using 4/4 solid oak. Will this help stabalize it?
Thanks,
W
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Replies
I don't think the back relief would hurt. I've always done it to keep any cupping down to a minimum. You've got to hate it when a door jamb moves in any way.
I run them about 3/8" wide by a fat 1/8th deep, with maybe 3/8ths between them. Seems to be what the stuff we off the rack has been run.
I just remembered you say you've got oak, I would definitely relive the back.
Don't worry, we can fix that later!
Definitely worth it. You may regret it if you don't, and it does not take all that long.
Will this help stabalize it?
Yes.
I set the table saw blade about a fat 8th high .... have the fence about an inch from the edge ....
the run one side ... flip .. run the other ...
bump the fence to about 2 inches .... run/flip/run ...
roughly center the cut ... run one last time ...
takes no time at all ....
Jeff
edit to say "spin" might be a better choice of words than flip ...
Buck Construction, llc Pittsburgh,PA
Artistry in Carpentry
Edited 10/2/2004 7:52 pm ET by Jeff J. Buck
if you can, orient the wood so the heart side is the visible side of the jamb (look at the end of the board at the growth rings, make the heart side the finish side) - this will cause any attempt to cup result in the center of the jamb coming proud - that's a lot better than the edges pulling away -
of course, nice tight grain quartersawn stock is even better <G>