Dear Bill, That was the most frustrating part about polyester resins, the plasticizers would leave the final product with time causing the part to become brittle. The newer resins seem to be much better. The other thing was the variable shrinkage. We used to have to match up the right and left hand passenger sides. Sometimes one could be 1/4" different in length. Don
On Jan 9, 2012, at 10:36 PM, scale S only wrote: > > ... I still have (I think) a heavyweight passenger car kit that the sides > broke into several pieces >
