Re: Sanding Off Decals
sure, you could, but here's the 'rub' on doing so...
sanding a decal is going to do a couple of things. First, the decal is going to sand differently than the material around it. Also, decals are essentially plasticized paper with an adhesive backing. You cut through the glossy decal and the heat created is going to smear the adhesive more than it's going to "cut it ". Plus, unless you are careful, the surrounding surface could get small nicks or cuts/waves in it from the paper riding off the hard to cut through decal and into the surface below it ( unless it's on metal ).
Faster is rarely better, unless you are using a process that is unnecessarily labor intensive ( sanding paint off an aluminum hull vs. stripping it chemically or soda blasting ).
Depending on what you are removing, a decal removing solution might be the ticket, you just need to get it softened up, peel the decal off and then wipe away the left over adhesive residue.