sanding large parts quickly

[GerN]

To sand large parts quickly, I use C-220 drywall sanding sheet. It looks like window screen and lasts through quite a bit of use. The part should be sanded with a circular motion for a smooth finish (surprisingly smooth, unlike coarse sandpaper). I do some resin casting, and C-220 is a good way to remove excess resin. I clean it under the faucet, or with an old toothbrush. It can also be superglued to a backing to create files.