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i use the same technique on my ball pumps. :) good job
325monkey 4 years ago
How? man o man! i cant make anythng. Dude how did ya make the balls do that? i have been trying to figure that out 4 a long time! could u explain it, how does the cranks wrk?
irockyounoob 4 years ago
i couln't figure it out either, but thers a good explanation at this one website. i cant remember exactly what it is but just google "marble pump"
dnrocks901 4 years ago