[davepl]

I've had two done by chemical dip. I was very happy with the result both times.

On the first one I paid extra to have it done late friday and left in the neutralized over the weekend, though whether that helped and whether they actually did it I have no idea.

All I can tell you for sure is that it was 12 years ago and the restoration has held up perfectly.

I have a second one I just shipped off to the body shop. It was also dipped and I'm pleased with everything it got out.

My only problem with sand (when done right) is you can never get it all out. I have to chuckle at the track when a nice car launches hard and leaves behind two little sand trails...