Had all my insides and engine bay done and all of the srtonger points on the outside.

The heat generated by the sand will either rip through or seriously warp a thin panel such as a wing etc. Be careful.

I got mine done locally for £40 (thats the whole car). I know of two places up here that will do it and of them is a general balsters and the other is a restorer of old tanks (army type) both pretty good at there job.

But be warned it gets everywhere - inside all the box sections etc. I had my car fully stripped so that there was not a single nut/bolt bit of glass or piece of wire on it anywhere.