mppickett posted:Alan Merklin posted:
I've done more fiberglass sanding than I want to recall. On flat surfaces you can use a long board sander on all other areas I use a rubber sanding block.
Alan, I find myself switching between a hard rubber block and a softer block or rubber rod when the curve is concave and the rectangular hard rubber block doesn't easily fit. Any warnings about using the soft rubber block?
I know that the thin rubber block ( pads) tent to allow too much finger pressure , can that telegraph those impressions onto the sanding surface. Guide coats are a tell all.