Dirk 3D Printed Electric Motor BOM
From Open Source Ecology
- 3 phase no feedback Controller - 12V 30A - [1] $6.42 + $2.30 Shipping
- Fidget Spinner Bearings (22mm total diameter, 8mm bore and 7mm width)
- 8 Disc magnets per rotor (8 mm thickness, 20mm diameter) 26.42 USD for 20. Much more for USA source - $3 each - so $24/motor. [5]
- Ebay - around $2 equivalent - [6] or $16/motor
- Copper wire (0,2 mm diameter max. definitely not more because you will get eddy current issues) [7] (Enameled copper wire ie Magnet Wire )
- Cost of $1-2 per motor using the $7 spools.
- Bit of brass tubing (4 mm outer diameter) to connect the coil endings in. [8]. $1 per motor, $8 total
- Solder
- Glue
- 8 mm metal rod for an axle (offcuts from Universal Axis are great for this). Or [9]
- 3d printing filament (kg estimate, also infill needed). See 3D Printing Filament
- a little bit of epoxy to glue the magnets in place [10]
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