That Herculiner is some tough stuff.I gave the angle grinder a try,but once it heats up,it clogs the sanding disks almost instantly.I'll give the Corner Cat(palm sander)a go,but almost anticipating the same result.Can't hurt though.The surface after waxing was shinier and more slick,but the surface is still way too rough a texture.Question on my last post:(obviously coming from a paint novice:confused2 )Aren't most auto clearcoats mostly a polyurethane product?Since the surface is textured,instead of spraying,brushing coats probably wouldn't leave noticable brushmarks,also I would think adherence poly to poly would be ideal.I'd apply several thin coats for buildup,with a light scuff sand between,eventually making the surface a little smoother.Again,just a thought from someone basically teaching myself autobody,but seems feasible.Any thoughts,opinions,recommedations,welcome,and anticipated!