I purchased a QJ Megaminx Tile Cube Black. Upon receipt, one small tile had fallen off. I would prefer to glue the tile back on, rather than return the cube, as I expect eventually other tiles may fall off. My question is what glue to use, so as not to damage the cube. Does the original glue need to be cleaned off first? Thanks!
Standard superglue should do just fine, just be sparing as excess can make the puzzle look cloudy.
I would recommend scraping away the old glue so you get a good, flush bond.