Try changing the thickness to .75 if you want a 3/4" board. 0.075 is just a little over 1/6" thick. Sometimes I struggle with numbers too.
Jerry
Having fun with my CW now!
C Machine spring of 2013, CarveTight, Rotary, designer 3.102, probe/PE,
vector 2d, 3d advanced, conforming vectors, STL. Photo Explosion 4.
HF 2hp dust collector. Headquartered in West-Central IL.