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Found 1 result

  1. Screwed up

    A few weeks ago I tried to make a helix-type lift for a next marble run. The idea is pretty simple and the base material available at a hardware store (okay, things in Germany are metric not inches). http://imgur.com/iM7AIXE Not shown are some screws and spacers. Here we have a close up of the ends: http://imgur.com/O7T9Di9 The biggest issue for me is winding the spiral since I have no workshop, no dedicated machines. So I took household material (a rolling pin) to wrap the aluminium strip around. The outcome assembled together still looks reasonable. http://imgur.com/xb2BSrT Unfortunately the precision is less than I hoped. The spiral I expected to get not more out of shape than 2mm. Actually I got 3mm and so the construction will not fit to 16mm marbles. 22mm will work better but are not intended here . Oh I notice that I am lacking some pictures of the current assembly with the housing. I will post them later. Anyway for the next 16mm-run this lift is deprecated.
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