I bought a soda blaster from Harbour Freight, its a 15 pound soda blaster, costs about a 100 dollars, plus a bag of soda, fifty pound bag, for about 35. Tried it today, works ok, but dosent beat a sander, my compressor didnt have enogh CFM to run it constantly, so it would only work for a few mins, then i had to wait until the compressor built up pressure. It does take the paint right down to the gel coat, but if you pause, it will drill a hole in the gel coat, all in all i am not that impressed with it, it uses a lot of media to take a little paint off, where it does well, is parts that a sander cant get into, but, for the rest of it, i find a sander is faster, and not having such great eye sight at short distances, i cant wear glasses, and goggles, so i cant really see exaxtly what its doing. I reckon, if i had tried it before i bought it, i wouldnt have bought it.