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September 23, 2003
1.5 Hours

Rustproofing

My rustproofing gun from Eastwood showed up today, allowing me to finish painting the inside of the door I started two weeks ago. I thinned the Zero-Rust slightly with regular thinner (OK to do), filled the cup and hooked it up to the compressor. The instructions say to use 60-70 PSI, so I started there, and the gun comes with three tips--straight, right angle, and "back spray"--and three wands--short, long and flexible. I started with the straight one on the end of the flexible wand and started spraying inside the door.

Rustproofing gun, nozzles and Zero-Rust.

The spraying was not difficult, though the gun did not atomize the paint very well, so I turned up the pressure. That helped a little bit, but I suspect that it is designed more for rubberized undercoating rather than thin paint. It doesn't really matter anyway, since the inside of the door won't ever be seen again. I was extra careful to hit the seams at the bottom and sides of the doors to ensure they were sealed.

Then I switched to the right-angle nozzle and sprayed the back of the inner door panel. The paint sprayed a little better with this tip, but it still went on pretty thick, so I moved it quickly around inside, trying to hit every surface. I also sprayed myself in the face pretty well--thankfully this wasn't POR-15, which would never come off. I was wearing goggles and a respirator, however, so there wasn't any long-term damage. I used the respirator just to be safe--though Zero-Rust doesn't have any isocyanides in it, they recommend using a respirator whenever it is being sprayed.

This is the inside of the door. All surfaces have been covered pretty
thoroughly. Note the paint drips forming on the inner panel because
the right-angle tip flowed a lot more paint than I thought.

The only down side I could see from using the sprayer is that it ate up a lot of paint. I went through about two-thirds of a quart spraying the inside of the door, and that was thinned. Next time, I'm sure I'll use less because I'm more familiar with how the nozzles flow.

Once this coat thoroughly dries, I'm going to coat the outside with a second coat of Zero-Rust in black to get sufficient film thickness and to make it look a little less ORANGE.

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E-mail me at toolman8@sbcglobal.net

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Last modified on 02/06/2005

Thanks, Fidget!