|Forum topic by Kirk||posted 02-26-2011 10:14 PM||2369 views||0 times favorited||11 replies|
02-26-2011 10:14 PM
I’ve never found any straight lumber here in New Mexico. I’ve even purchased a 4’ x 4’ sheet of plywood and by the time I got it home it came unglued. I took it back and got a full sheet and no problem, except it bowed/twisted a bit. I even made a planner dog. It works. But it can’t take out more than the board is thick. That’s how most of my lumber has is twist or bow.
Anyway, I bought a 2” x 6” x 8’. I was the straightest I could find in the stack. I had a slight bow but I though I might be able to flatten it by cutting it into small sections, about 8”. I cut on end on one side of the blade, and the other end on the other side of the blade.
No matter weather I used the radial arm saw or the table saw, no cut face was parallel. It’s like my saw blade cuts a wedge. See the picture?
This is an over exaggeration. We are only talking less than 1/2 of a degree.
Let me explain again. I cut the pieces into 8” or so, but equal in length. The I recut each face of one end on one side of the blade, and the other side using the other side of the blade. i.e. each face should be parallel to each other, thus flatten the board but shorter in length.
I am at a lost in getting lumber of any project to stay straight/flat.
-- W. Kirk Crawford - Tularosa, New Mexico