Door skin removal?

[lyrikz]

Just curious if anyone had any tips on getting inside the door for full rust removal. My doors are in good shape but I know there is 40 years of flash rust on the inside. I'm looking to do something like this.


Or this??




I want this blazer to last. I don't want to worry about rust for a long time. Any tips? Or do I just grind d the edges and cut it apart??

[69-72]

Yes you grind the edges, that's the easy part though. It's ok to have surface rust, if I were you I would just spray some penetrating oil in there.

[hemi43]

If your doors are in good shape, then send them out for acid dipping. I had a complete car done a few years ago, and the results were amazing.The pictures below are before and after.
Another way of controlling rust inside a panel is to "swish" primer inside of it. I use a rust converting primer and reduce it with thinner so that it can wick in between seams.

[lyrikz]

Originally Posted by hemi43

If your doors are in good shape, then send them out for acid dipping. I had a complete car done a few years ago, and the results were amazing.The pictures below are before and after.
Another way of controlling rust inside a panel is to "swish" primer inside of it. I use a rust converting primer and reduce it with thinner so that it can wick in between seams.

Ok awesome. When i built project Karma. When it was done, when it sat in the rain once a few days later there was rusty water that had dripped out of the doors.. I had the doors sandblasted and i just tried to get some paint in there. I dont want any of that to happen on this build.

I really like the ideas. The doors are very straight.. I think the acid dipping will cost me because i would have to ship the doors, but i really like primer idea. Thank you.

[hemi43]

Agreed, the acid process will cost a bit, but IMHO it will be cheaper than replacing the skin.
The good part about swishing primer inside the doors, it that the surface rust doesn't have to be removed. Converting primer will neutralize and seal everything. On my current 70 Blazer build, I intend to do this to the whole body shell by using a rotisserie.
Dan

[teds72]

ever looked into derusting with eletroysis (battery charge) look it up on the net
polarity is critical!


https://www.youtube.com/watch?v=NKZv14-K71g

http://www.stovebolt.com/techtips/ru..._derusting.htm

[hemi43]

Originally Posted by teds72

ever looked into derusting with eletroysis (battery charge) look it up on the net
polarity is critical!


https://www.youtube.com/watch?v=NKZv14-K71g

http://www.stovebolt.com/techtips/ru..._derusting.htm

The process is "line of sight", so it may be a tad more difficult to derust the inside of the door.

[lyrikz]

Originally Posted by hemi43

The process is "line of sight", so it may be a tad more difficult to derust the inside of the door.

Line of sight?

I think that would work well if i had the right sized kiddy pool.

I may look into that. get it derusted, then do the encapsulator with thinner trick and should be 100%....

building a project thread now. This should be fun.

[teds72]

I have a kiddy pool for doors and fenders and a plastic 55gal drum for small parts works great! Ted

[cleszkie]

When I replaced the lower door skins and door bottoms on my Blazer, I treated the inside of the door with Eastwood's rust encapsulant spray. It came with a long flexible straw with a spray nozzle at the end to guide the spray where you wanted it. I did this after the doors were all back together to make sure all the new welds got covered in addition to the new pinch welds along the door bottom. I sprayed until the encapsulant was leaking out the drain holes and through portions of the pinch weld to make sure everything got saturated. I rocked the doors back and forth to make sure the stuff got everywhere. I then cleaned up any drips and called it good. Four years now and no signs of any rust or rusty water coming out of doors. if your doors are good, don't open them up. Just treat the inside and make sure your drainage holes are always clear to prevent standing water.

[franken]

Acid dipping will leave acid in places where the metal overlaps, like door edges and many places on car bodies. Pretty much anyplace that's been spot welded.
That acid will show itself in a few years.
The simple fact is, you can't get all the rust out of a lap welded assembly like a door, fender, hood, cab, etc. w/o replacing the skin and disassembling the inner frame. You can verify this by taking a scrap part, derusting any way you choose and taking it apart.

[fourspeedwagon]

Hemi43's Sedan looks great, but I'd have the same concern that franken brings up. My understanding is it will take some time, but the paint at those seams will bubble off in a few years.