I have one of those little Harbor Freight spark plug sandblasters but it didn't seem to work very well... I'm just inclined to buy a new one as really the motor came free so at this point I'm not $20 into it yet..
My Hf plug blaster was real handy when I was getting a tune on the Greyhound on the race kart. I would have to go through my notes to find what model the Keihin carb came off of, one of Honda's 2 stroke MX bikes. Half the price of the Mikunis the go kart hot rod shops were selling and functioned just as well.