Sanding epoxy resin?

I don’t know. Do a test piece or your project will be the test peice.

-- Jerry

You can sand it as smooth as you want, until they are completely gone but the optical characteristics of the epoxy and the poly are close enough that the poly should make small swirls go away if you don’t get them all.

-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fibreglass trees. http://thecanadianschooloffrenchmarquetry.com/

As Paul Said the epoxy coating will take care of it self ,do 2-3 coats and sand in between,if you don’t like the top coat you can sand to a 600-1000 grit finish and then buff it out.

-- https://www.artisticwoodstudio.com/videos wood crafting & woodworking classes

It works just fine. BTDT.

-- He who dies with the most tools... dies with the emptiest wallet.