Quantity   Component name
1 × 13 dollar roll of almost unusable matte 3d filament i want to like it because it feels neat.. but it was half the roll to figure out how to get it to stick.
4 × Old Computer screws you picked out of the carpet or the vacuum bag
4 × Longer machine screws of undeterminable type those 'other' kind from that one weird computer part you bought that one time a decade or two ago
1 × 3d Printed clever hand drill off thingiverse you know the one
1 × "Close enough" sized drill bit cause if your 3d printer prints holes the right size then you're out in your bmw and not reading this
1 × set of cheap jewelers files Beveled edges in openscad are hard
1 × usb doohickies (duh) almost forgot the point of this whole thing
1 × nice braided usb3 extension cable i paid for a bolt or two going into space by overpaying for this on that one site
1 × nice braided usb2 extension cable think i had a reason to use just usb2 at some point
1 × Your favorite computer screwdriver(s) do tools go here too?
4 × M3 x8mm hex cap machine screws (per cartridge) these actually fit everywhere on this project if you want to be fancy like your bmw