I use a lot of 1/8" BB and rather than use a backer, I stack cut 3 or 4 which helps with the control. I do use the blue tape, got some purple which doesn't stick as well but comes off easier. Had a friend ask for an angel cutout about 3" tall that she could paint and add a grandchild's name. Took some different patterns to show her and wound up with an order from her for 23 and another 25 for another lady. Took one I had cut and sanded to show her to make sure it would work and wound up with another order for 12+ from another lady. I have sworn to stop showing things as it creates more work that I am not looking for.