How'd I get permanent marker off polycarbonate? Answered
I was using permanent marker to mark the fold lines for my front panel on my cnc machine. It comes off easily with methylated spirits on an earbud, but not after heat has been applied during the folding process.
I've tried acetone, 2K thinners, spirits, rubbing alcohol and even PlastiX (used for renewing the yellowing on old headlight lenses) with no success.
The irking factor is high and needless to say black duct tape on the back just wont do it for me.
Any other ideas?