Need some guidance

Bugz · « **on:** May 05, 2008, 03:12:25 PM »

I need some guidance. I took a wire wheel brush in a drill to some of the surface rust on my bug door and pretty much got it down to metal. What is left is black splotches (see photo) where the rust was. Is this sufficient or do I need to keep going until it is all metal? Or can I use something like POR 15 at this point?

Ret.Bugtech · « **Reply #1 on:** May 05, 2008, 04:08:29 PM »

Hey ,I am a long way from being a Body man, but think I would go easy with that wire brush. That brush could cut or put gouges in the metal that might make it harder to get smooth again without doing a lot of filling and sanding. I think I would use some kind of orbital sander . But what do I know. :roll: :roll:

Bugnut · « **Reply #2 on:** May 05, 2008, 05:53:58 PM »

What he said! A da sander would be better. That lil black stuff is rust too just super heated rust. It will come back some day. But properly primed,sealed and painted it would be along time. If ya wanna make sure it dont then POR 15 it. Depends if ya wanna spend the money or not.

Bugz · « **Reply #3 on:** May 06, 2008, 12:50:23 PM »

That helps a lot. I wasn't sure if the black areas was actually rust or just a residual discoloration caused by the rust. I have a friend that is going to let me borrow is sandplaster and compressor which I had planned on using on the few worse areas on the car. So if I use POR 15 after I get it to this stage will that eliminate the need to go further into the metal with brush or blasting? Also, will POR 15 fill in these small pits enough that I don't have to use any fiberglass or bondo and I can just sand it smooth?

Zen · « **Reply #4 on:** May 06, 2008, 05:36:02 PM »

I'm NOT speaking from experiance, just from what I've heard and read . . . once cured, POR 15 is tough . . . you can sand it smooth, but it's not like working with body filler, or normal paints and primers, it's going to take a LOT more work and sandpaper. Be carefull with a sandblaster too . . . I've heard of people warping pannels and doing other damage to the metal they were trying to clean up. Again, I am NOT speaking from experiance and I am by no means a paint and body man. I've just heard enough DIY paint job horror stories to know you need to seek the advice of a good paint and body person BEFORE you start . . . or you may end up having to pay them more to fix what you mess up than it would have cost to have it done professionally to start with. On the other hand, I've seen some darn good looking first time DIY paint jobs. One particular dune buggy I've seen pictures of comes to mind . . . :wink:

Bugz · « **Reply #5 on:** May 06, 2008, 10:25:29 PM »

Quote

you need to seek the advice of a good paint and body person

Judging from the small quantity of posts pertaining to body work I assume we don't really have anyone in the club with any expertise in body work. Of course I trust the things Zen and David have to say but it would be nice if someone with extensive experience in body work were in the club or able to post here.
I know there is a good bit more info and posts on the Samba and Shop Talk Forums.

Bugnut · « **Reply #6 on:** May 07, 2008, 07:39:42 AM »

I paid for most of my cars working in a body shop from age 16-20. I'm no expert I mostly didi prep work and por-15 wasnt around then. The stuff is real tuff like Zen said so dont get overly happy with it. As for sandblastinf he's also right. Do not use sand! It produces a ton of heat and alot can go wrong.Not to mention the silica will kill yer lungs. Try a different media if ya got to do it. Soda blasting is a bit milder. You shouldn't have any problems with primering,sealing,and painting what you have there. Use a self etching primer to etch into the leftover rust,then seal it and paint it. When I say it will return were talkin 10 years and I doubt your paint will last that long. :wink:

Bugz · « **Reply #7 on:** May 07, 2008, 08:16:59 AM »

Quote

Use a self etching primer

Is that what POR 15 is? If not do you have a brand recommendation?

Ret.Bugtech · « **Reply #8 on:** May 07, 2008, 01:34:42 PM »

It is kind of sad that there is not a pro body man in the SCVF. If there is he is keeping quite

Bugnut · « **Reply #9 on:** May 07, 2008, 06:43:51 PM »

My knowledge on the subject is both limited and outdated like most of the "knowledge I have". If ya need to zero in an M-4 carbine or daisy chain some claymores Im your man. :lol:

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