I have a piece really nice curly birch that's 1/4" x 8" x 24", but it has twist and cup in it. What's the best way to flatten it out?I tried wetting it for a few minutes and sandwitching it over-night. It came out flat but curved back during the course of a day. Should I try this again but soak the piece over-night first?
thx,
gar.