yeah, thats usually how sheet metal it done, hundreds of small tacks..i dont have the patience for it though, thats why i didnt get into autobody work, industrial steel fab is so much better imo.
mr. mookster, your very right. at the shop we use #17 (laquer thinner) to wash everything down before getting primed/painted. the #11 leaves streaks and doesnt eat the rust and grime very well. Urethane thinner is very very expensive compared to the others, we only use it when using urethan paints. it is also much harsher than the others, wear your mask or your going to taste that shit on your breath all day. http://www.cloverdalepaint.com/html/catalog_ir.asp
Clova Thinner #1: Mineral Spirits
Clova Thinner #3: Butyl Cellosolve
Clova Thinner #4: TS 28 Slow Industrial
Clova Thinner #5: Low Odour Mineral Spirits
Clova Thinner #7: Petroleum Naphtha
Clova Thinner #9: Xylene/Naphtha
Clova Thinner #11: Xylene
Clova Thinner #13: Toluene
Clova Thinner #17: Lacquer Thinner
Clova Thinner #19: Premium Lacquer Thinner
Clova Thinner #21: Methyl Hydrate
Clova Thinner #43: M.E.K.