Home >How To Make Ball Mill With Lego And Pvc Pipe

how to make ball mill with lego and pvc pipe

Aug 06 2013 Lately the boys have been into anything that shoots flings or pops I experimented and created this simple Nerf dart popper for them and they were thrilled To make one you need A piece of 34 inch PVC pipe cut to about 4 inches long A balloon

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