I always sand by hand. No issues with burning through. Buff with 3M prodcuts...I know others are good...but you CAN see a big difference using 3M. Its more the effort it takes to use the product.
PM me if you need any help.
"But if serving the Lord seems undesirable to you, then choose for yourselves this day whom you will serve, whether the gods your ancestors served beyond the Euphrates, or the gods of the Amorites, in whose land you are living. But as for me and my household, we will serve the Lord.” Joshua 25:15