Need some expert advice. No need to get into the details of why... Need to modify my Magpul RVG. What I need to do first is fill the cavity with something (epoxy maybe) that will make it rigid so it can be machined... remove small areas and not have it collapse. I know epoxy heats up a little as it cured. My question... will it heat up enough to hurt the grip? Melt it? Warp it? I am going to fill the whole cavity to make the grip solid so it will be quite a bit of epoxy.