ORIGINAL: darock
Any other suggestions out there???
It's the resin that has weight. The cloth adds nothing significant for weight. A lot of the CL stunt guys would have a big roll of paper towels and after a surface had the cloth painted down on it, they'd blot any area that showed an obvious shine. That area had resin completely covering the glass and that was surplus resin that had to go. And it won't go easily to sandpaper. It takes a light touch with the paper towels but that's easily learned.
Another variation of the paper towels is the use of a roll of (unused) toilet paper. It is very absorbent and blots off virtually all of the excess resin.