My son is restoring a Datsun 240Z for a guy and bought a sand/soda blaster from Summit Racing. Don't know what he paid, but he said he didn't trust HF brand and it's been working well for him. He's done quite a bit of sand and some soda.
I just looked on Summit's site and don't see anything that looks like it. I also don't know squat about blasting down to gelcoat.
If you're interested in his comments on the blaster and how it works with soda, I'd be glad to talk to him about it.
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 Scott, Portland, OR '85 V-20 I/O, Merc 170
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