Katherine Swift, I know sanding is your favorite and doing it is my cry for help. How high of a grit do I go with sanding? I was thinking start with 220 ending with 15000. Sanding dull things. Would the newly poured resin on top still be dull? Will I get a crystal clear look to see my original artwork below? This really is a question of how resin fills in gaps when layered after sanding below layers and how light reflects in resin.