Plastisol is a PVC product, EVERY one of em will release chlorine gas when burned (Scorching or overheating to the point of yellowing is not burning) which enters the lungs and creates hydrochloric acid. NOT good. Pick a plastic, work where you have good ventilation and wear proper protective gear and you'll be good.

Leonard (*********s) does sell a very good plastic, incredibly consistent which is something I haven't seen from Do It in either of their lines.