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6mm Plywood
16x 16mm M3 screws
16x M3 nuts
1x Swivel ball bearing
I've got the ball bearing off ebay. Bought a pretty huge one which is not necessary but nice.
http://www.ebay.de/itm/371797651932?_trksid=p2060353.m1438.l2649
Make sure that the inner hole of the ball bearing has a diameter of at least 22mm or else you won't be able to get the power cable through it.
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