- ~500g of filament, any plastic works as long as it's not a flexible filament - Four 608 skateboard bearings (e.g. http://goo.gl/U2KCTp ) - One 6005 bearing - 2pc 450mm (or less) 15mm aluminum tube (lower rail) - 400mm (or less) 15mm aluminum tube (extension tube) - 300mm 20x1mm aluminum tube (main tube) - 140mm 20x1mm aluminum tube (grip) - Two LP-01 macro sliders for a "4 way" configuration (e.g. http://goo.gl/VgClXb ) - One 1/4-20 UNC 3/4 screw - A couple short pieces of M8 threaded rod or equivalent screws and nuts - Six M3 x ~20 screws, cap head and six nuts - A couple of M8 fender washers as counterweights - One or two bike grips