I am trying to cut a rectangle out of 3mm white acrylic (with backing paper on) I used 100% power, and tried variable speeds from 50mm/s down to 1mm/s. I must have done 10-15 passes and it wasnt completely cut. (I managed to snap it out. My question is should a 10W S1 be able to cut through 3mm acrylic in one pass. Thanks