Over the weekend, I read a good article from Michael Sepe, Analyst and Author for Injection Molding Magazine that discussed and illustrates the impact Crystallinity (of Acetals & PBT Thermoplastic Polyesters in this case) has on dimensional stability. It also, provides a better understanding of the fundemental changes in behaviour when processing an Amorphous Thermoplastic over a Crystalline Thermoplastic. “Click” on the following “Link” http://immnet.com/articles?article=3438 to read this informative article. A good read!!