Door dipping for rust??

[dhbfaster]

There's some rust inside my (4)doors. Its not horrible, but I figure I might as we'll take care of it before I finally paint them. With all the layers of paint on the outside, there's going to be some cost to removing it all. I found a place in Eugene that will dip them to remove paint, remove rust, and treat for rust...$80 per door which doesn't seem too bad...except I have to get them to Eugene and back.
Anyone have any experience with dipping for rust?
Is it better to just blast them inside instead? (Steve? You're a lot closer now that I think about it. What about powder coating just the inside?
Anyone know of someplace closer than Eugene that does dipping?
Appreciate all advice!

[doghows]

The place in Eugene is the only one up here. Most of them closed because of the EPA regulations.
As far a powdering them that is what I did. Strip everything out of the doors, and I do mean everything. Blast them clean and then I powder the entire door,inside and out with my epoxy primer. You do your body work and paint right over that. It works very well! Let me know if I can help you out.
The dip shop charges $80 per door? That's $320 plus travel time. I think my cost of powder and oven time might only be about $200 to do all 4.

[dhbfaster]

That sounds like a plan...
Will the body shop worry that it's not their primer?
Maybe I should do the wheels hood and trunk lid that way too.

[doghows]

I can powder coat the hood and trunk but cannot blast them they warp way to easy. I can blast around the braces but not the unsupported metal.
It's new to most shops but it work better than there traditional sprayed on epoxy primer. Wheels piece of cake.

[dhbfaster]

When you powder coat the hood or trunk lid, what happens to the old paint inside the channels that you can't get in to remove?

[doghows]

Usually nothing. You can powder right over paint but then the powder becomes a removable product just like the paint. When I got done sanding my hood there was little or no paint left anywhere. I can powder into more places than paint ever thought about going. Powder is electrostatic and will stick anywhere there is conductivity. So in my opinion this primer powder coat is a way far better base than any paint. That is why I did my whole car in it, I was able to powder under the dash, in between the outer quarter panels and the inner panels. I am pretty confident that my car will NEVER rust again. [thumb]

[dhbfaster]

Very cool. I would have thought any paint left inside the channels would flake off in the baking.
What about the fenders? Can you blast those?
Also, do you have a link or a spec sheet with info about the primer for me to read about?

[doghows]

Fenders are no problem. The manufacturer or the powder is Cardinal paints, there is a link to them off my web site. Doghousepowdercoating.com.
Not sure how much info they have on it. I believe the code on it it gr233 pr something like that.

[dhbfaster]

Is this the stuff?
http://www.cardinalpaint.com/aboutus/news_detail.php?nid=10

[doghows]

No. That is a zinc based product. You need to look for epoxy based. I'm not working today or I'd give you the code number. I thought it was GR-533

[dhbfaster]

Ok, now I think I found it
http://www.cardinalpaint.com/uploads/userdocs/Powder%20TDS/GR533-E305_TDS.pdf

[doghows]

Yup that's the one.