Omnidirectional conveyer

I desgined a omnidirectional conveyor. There are 3 options of wheel desings: screws are flush with the wheel (easy support removal)screws are flush with the wheel (hard support removal)screws are not flush with the wheel (no support removal required) here you need at least M2x14mm screws Furthermore you can chose between 2 fixing option:Option 1: screwsyou need 36 times M2x10mm screws and 36 times M2 nuts. Attention for option c you need M2x14mmOption 2: filament boltunused filament, insert it into the hole, melt one end and press it to the wheel with an metal (i used the head of the screws)cut off the rest on the otherside with 5mm left and melt it agian. repeat for all wheel holes. You need for the small housing:6 times M2x18mm screws 6 times M2 nuts For connecting the spools tooth belts work best (MXL 3mm Timing Belt, 42 teeth) or to just work some rubberband The gears can be hard to get on the spool and also the gear change can be pretty hard, haven't found a better solution ye