Originally Posted by HyprLtH20
Im having to change the material from abs to fiberglass. The company i have been working with on this has now broken three of my molds and i cannot continue to throw away money buying molds for them to break. I have a company that will produce quality fiberglass pieces for me but is much more expensive. I am not going to raise the price for you guys since i have aleady quoted a price. I am now trying to get a finished sample made in fiberglass and will let you know once i receive it along with pics
What material is their mold made of? I have quite a bit of experience around plastics through working at Nissan over the years... typically, TPE (Thermo Plastic Elastomer) plastics work best for injection molding. ABS is very brittle and non-compliant once set. TPE can be soft, stretchy, and flexible, or hard and rigid depending on the mixture of crystalline and amorphous polymers used.
Here are some other tidbits...
Comparison Table for Plastics.