Thanks Mark, bought an el-cheapo sandblast gun on fleabay some years back and made a cabinet for about a tenner using a clear plastic storage tub, a couple of plastic ducting reducers and a pair of chemical gauntlets with Jubilee clips and some other odds and ends i had laying around.
It's not perfect but it does the job.
The wheel hasn't seen any paint at all so far and the front of it won't except for the square holes round the edge.
