Areas that you cant DA with 80 grit

C

cstrom72

For the small tight curvy areas that you cant get a DA sander with 80 grit, (door jambs, channels, body lines) whats the proper metal prep method? Just get 80grit paper in there with your hands and fingers?
 
Yes im stripping the paint of a relatively rust free bronco.. Harbor freight hand held blasters worth a crap? I think I saw one for 30 bucks... What media works best for the eopxy primer? basically just want to get a good surface in the seams and tiny places I cant even sandby hand
 
I've worn the fingerprints off my fingers more times than I can count by sanding into hard to reach areas. A spot blaster is a critical tool for proper preparation.
 
This post was in one of Rusty's threads, but this thread seems like a good place for it. I ordered these and really like them for bare metal---last longer and I think they cut better, thanks crash.
crashtech;15869 said:
Those look like DA marks to me. It takes a nice grade of sandpaper to hold up to intense metal sanding like that. I don't know what Rusty uses, but we have in the past used 3M "Green Corps" 40 and 80, but in the 80 we have switched to Norton "Blue Mag." Our regular sandpaper is nice for paint and filler, but dies quick when sanding metal. The funny thing is that the Blue Mag is not all that great for filler, we only use it on bare metal.
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X2 on the Green Corps DA paper for metal, regular paper won't cut it, never tried the Blue Mag.
 
The Blue Mag has a high quality mineral and resin bond, but we found their 40 DA and longboard to have an inferior paper with a too-strong adhesive, which makes changing paper difficult. The 80 does not seem to suffer from this problem. This judgement was reached several years ago, things may have changed since then.
 
Call me a dumb rookie, but I like the course grit sanding spnges. They can conform to odd shapes but are easy on your fingers. Great for the underside of trunk lids, hoods and door jambs. The couse grit seems to bite into the metal good and leaves nice sanding scratches. I even use a medium grit for sanding primer.
 
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