Went to see a local blast cleaning place today, to discuss getting the shell cleaned up. It was recommended to me by a fellow DDKer - details here:
http://www.decorrosion.com
The company is run by a young guy, Luke, and his grandfather, Barry. They were nice guys. Luke showed me a 190SL they were currently working on. They were having to carefully blast around the massive gobs of filler that was in the body because the owner wanted it kept in there. Dear god. Given the brief, they had done a nice job of it, and it proved they knew how to work delicately. The car itself made me feel ill.
I arranged a date for them to take my car to be cleaned up.
When I got home, I went into the garage to have a look at the car again. I often like to go in the garage and just sit and stare at the car and think. Since I screwed it up with the surface rust problem, I've only been able to look at it with nervous angsty bad vibes. This was how it was going today.
After a short while, I had an impulse to wheel out my pot sandblaster and try it on the door. Turned out it didn't take much to get it sparkling again...
So I did a bit more
I took the same zinc phospate wash (POR Metal Prep) - the thing that had caused the problem in the first place - and attacked the car with wire wool and some rags. Turns out, if you follow the instructions, the stuff does work. It came up pretty good.
I don't know what to make of this now. The easy route would be to take it down to Decorrosion and have them clean it up. The slightly less easy alternative would be to sling a tarpaulin over the front of the garage and blast it in the driveway. More work, but less moving the car about. Perhaps a bit cheaper, but probably not much in it once I've bought some decent blast media (I used sand today, because it was in the pot, but I'd probably buy some grit so it wasn't so dusty), and either buy or borrow an air-fed mask and a second compressor to feed it. I imagine I could have it cleaned and painted in a day, and it would be pretty satisfying to do it myself, but perhaps too cold to apply paint in this weather.