About this 3D model

My first mechanical design. Not the best, but its working. to build it you will need: 5x m2 bolts 10mm long 1x m2 nut 3x 608 bearings 4x 5x8x2.5mm bearings some ptfe tube 2mm inner / 4mm outer diameter 2mm rod (bicycle spoke, etc), about 10cm of it, and something to cut it, but you're maker, don't you? assembly instructions: