I need a bit of tech data an I know there’s some gurus in the forum to help locate it. I’m about to make some trim fixtures out of ltm ( low temp mold ) carbon but to cure it it requires and oven run at 160-180* for an extended period of time. Before I start cooking off a donor lens for the clam shell fixture does any know what the maximum temperature rating goggle lenses can withstand for say 4 hours before deformation of the lens ? Also are the m lenses rated to the same tolerances ?