I have been in the composites business for a long time. Always open mold, 10% chopper (mostly bulking molds) 90% hand lay. I have been playing with some prepreg and that’s the direction I want to go. I don’t think my VE molds will withstand the 250 degF cycle too many times. My parts are fairly large. I contract make boat parts like consoles and car body parts like hoods and fenders all the way up to pieces the size of a half of a car.
What are my mold making/tooling choices for prepreg that will last at least 30-40 pulls but would like more? The only one I have looked at was Freeman high temp epoxy surface coat and epoxy high temp laminating resin. Both are good to about 300 degF. But 5 times the cost of my current VE solution. Maybe it’s 5 times better, I don’t know. But I’d certainly like to at least consider what’s out there.