[annapurna]

Originally Posted by drewrad

I have no problem with polymers themselves, the actual substance. Its very hardy stuff. If anyone doubts that look up 'Glock 26 torture test' online. Polymers have been in handguns for years with fantastic success and they are durable.

The concern is that very few people use flexing polymers that are adhesively bonded to two non-flexible structures without any way to check them in-situ over their lifetime. It's putting a great deal of trust in materials and bonding techniques that we don't know that much about and doing it with the blind hope that it works. If there was better long-term fatigue testing of adhesive bonds in the materials engineering literature or a formal way to evaluate the ADRs to ensure problems were caught before they failed, then I'd be singing a different tune.