BOM
Controller Choice
First, choose the control board you want to use in your 3MS. Choose a controller from the available ones here.
Number of filament units
First, choose the number of filament units you want. Each filament unit lets you print with an additional filament. Two filament units are the minimum. You can add or remove filament units after building, but the BOM and configuration will vary based on how many filament units you want.
Controller BOMs
Choose the BOM for your chosen controller from the list below:
Recommended: BTT MMB
Other Controllers:
- BTT SKR Mini E3 V2
- BTT SKR Pico
- Mellow Fly D7
- BTT Octopus (main MCU)
- Zonestar ZM384 (main MCU)
- Mini RAMBo
- Geetech A30T
Filament Unit BOMs
For each filament unit, purchase this BOM:
| Name | Quantity | Price | Link | Notes |
|---|---|---|---|---|
| NEMA17 Stepper Motor | 1 | $9.99 | Amazon | You can use a pancake stepper if you want, but it will have less torque |
| MK8 Metal Extruder | 1 | $9.99 | Amazon | Alternatively, you can use this Dual-drive MK8 based extruder |
| PTFE Tubing | 1 | $8.99 | Amazon | You likely won't need this for every unit, as this is usually too long for only one unit |