The post a while ago about parking lights got me thinking about repairing the lenses on my '34 turn signals. I used '52 Chevy licence plate lights as did RODNCUSTOM on his '32 but I tightened mine a tad too tight and ended up having them both break. I also used one as a third brake light (not HAMB friendly maybe, but I don't want my coupe getting smacked in the bum by some idiot who can't see my 47 Chevy lights.) and I kinda like the look but the red LEDs I used didn't show up well so I wanted to make a red lens. I made up a little wooden box and filled it with Bondo, set the one good lens I have in there and let it start to set up. Once the bondo started to kick I pulled the lens out. (I used wax as a release but didn't trust it too much.) The lens came out clean. I used a very thin piece of lexan I had picked up at a swap meet and a heat gun to mold two clear lenses. I was surprised how well the turned out so I made a red one out of some 20 year old Plexiglass I had laying around - it was thicker then the clear and required a lot more heat but the toughest part was peeling the backing off the 20 year old plastic. I drilled a hole in my new mold to let the air out and to hook up a vauum line if required but turned out I didn't need it. Here's some pics (please excuse the dust but the coupe's been sitting for three months - it's frick'n cold here)
An oven would probably have worked better but if your wife is a mean as mine you'd use a heat gun too! LOL. Hope this helps someone. I couldn't find any more Chevy lenses and It seems they repop only sedan delivery lenses, plus the red one is a bonus.
Here is a step-by-step procedure for making lenses in case anyone is interested, all kinds of custom lenses could be made using this process. Alumilite Lense How-To.
Not for lenses but I used it for prototyping a repair piece for a printer for work and it worked great! It was a pretty complicated sensor flag and it came out perfect.