Hello,
I'm making a panel for a chest using shop sawn 1/8 walnut veneers, which I've glued using Unibond 800 to a 1/4 inch hardboard substrate. The dimensions are 17 inches by 14 inches. I veneered both sides and it came out of the vacuum bag flat.. Next day I found significant warp along the long dimension, and it won't fit in the dado. I have two questions: first, can I get this to be flat again, and second, what did I do wrong?
Thanks,
Izzy