Monday - November 30, 2020
I had a few chores to deal with after the holiday weekend but managed to get some time in the shop this evening to deal with the Aluminum Plastic Film puzzle.
I slapped an Electric Light Orchestra CD into the music box, hit the play button and started setting up my work. I did pause a bit during the song Rockaria as I experienced some frisson and then it was back to trying to get that bleeping plastic off.
I had applied the heat gun and was scrapping at the plastic with the piece of wood scrap when I noticed the plastic film seemed to be a bit more pliable. I managed to get a pinch of the plastic and was able to start lifting it off a bit.
In a pretty short amount of time I had removed most of the plastic from between the "seams" on the back of the C-Channel.
While this progress was gratifying, I didn't find another place where I could do something similar.
I recalled that I had gotten a few Eraser Pads in a toolbox full of tools I had bought a few years ago. If these things work on pinstripes and stickers maybe they would work on this plastic film.
I set to work with my Makita battery powered drill and it did work. The process went though batteries pretty quick and the "plastic swarf" that resulted needed to be cleaned up pretty often to keep it from interfering with the removal of the film. Still, if I leaned on the Eraser Pad pretty hard and kept removing the debris that resulted with a alcohol wipe-down, the plastic got cleaned off the aluminum.
It wasn't fast but it was a lot faster than the heat gun and the wooden scraper.
I'm still looking for a method, probably involving chemicals, where I can apply an elixir to the plastic film and walk away for however long it takes for the magic to occur.
I probably need a magic hat like Mickey Mouse when he was the Sorcerer's Apprentice. That's probably what it will take to find a low energy solution.
Maybe paint striper? There's got to be something that eats plastic but leaves aluminum untouched.
Scott