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sandpaper backing vs. polishing12/12/20
When sanding resin in an epoxy resin table up to 3000+ grit with a DA/RO sander, would adhesive-backed sandpaper give a more flat/accurate polish vs. hook and loop paper due to the potential for unevenness in the velcro system?
A lot of polishing is done with a foam or lambs wool bonnet. They are way softer than velcro backing.
You'll never see a difference between velcrow and PSA, especially at 3000 grit.
Make sure your DA/RA has a new flat pad.
The newer hook and loop pads are not your grandpa's J hook. The hooks resemble a T and the stiffness and flatness is top notch. If you still have the J hooks look for the newer hooks.