I have been looking for a plastic to cut templates from. On the forum someone suggested that I look for cellulose acetate butyrate and it is hard to find. I am now told that there is only one mfg. left that makes it in sheet form. My contact at Calsak Plastics says that "Vivak" is the equivilant. It is PTEG plastic and I was wondering if anyone had any experience with Vivak or PTEG on a laser.