been watching videos. my buddy wants to sand blast the places to lead. Cant we just grind down? I see they want a ruff surface anyway. 36-80 grit. Do you wipe with a degreaser (330). then apply the tinning , then lead. Tips on cleaning on anything ?

1969 Dodge Coronet R/T Convertible
1979 LiL Red x2
2012 Yellow Jacket
2006 mega cab
1977 Trailduster
1979 Trailduster