- 5 Mar 2017
- Reaction score
- Shepton Mallet, UK
Good point. Spinning the straight edge around can help with identifying this situation. I use winding sticks as part of the flattening process which I find to be the best approach. You can simply look down the board but the winding sticks exaggerates the twist.Out of twist -- crucially important. Dead flat to the point of no light showing when testing length and width -- much less important.
It's possible for a panel to pass the light test, and still be in twist, if so it won't pass the light test when tested diagonally.