I have had a few successful carves with the UCB and really am pleased with it. BUT....I have brain freeze when I try to do a cut out carve, I can't get past the "finding board thickness" and of course the machine stalls out when the bit presses down on the side of the UCB when trying to auto measure the thickness. I am confused as to the holes I drilled in the sides of the UCB. If the bit should measure thickness by dropping down into the hole then everything depends on where you place the board?? Any way to make the machine ask for the thickness instead of trying to measure? I am wondering if the UCB just won't do a cut out carve for the reason above? I always place the board in the center of the UCB and leave it proud by 1/8+ and I don't have length measurement problems. Thanks for any and all responses.