It doesn't make the plastic melt as long as you wipe away all the excess, like if you see dots or puddles of it. Even if it does ""Melt" (I've only had that when lubing my megaminx, a tile went somewhat soft) just don't try to scrape plastic out, you'll be okay. If it does start to melt, I might dissassemble an wait for the jig-a-loo to dry. go to youtube.com/badmephisto and search "Lubrication expiriment" for a method.