I'm trying to carve a memorial cross for a garden. The pattern is 17 inches long by 8 inches wide. The board is 24 inches long by 9 1/2 wide. It's rough cut red cedar with the ends taped. I keep getting the message in the picture. When I have the machine measure the board it's just shy of 24 inches long but every time I try to carve I get a different measurement. I'm confused.
Thank you
Ambrose