OSSMBuild Sequence
6. Motorhead Middle
Install the standard motorhead middle section.
Parts and tools
| Item | Quantity |
|---|---|
| Standard motorhead middle | 1 |
| M5 × 35 mm bolts | 4 |
| M5 nuts | 4 |
| 4 mm hex key | 1 |
| Small flat-blade screwdriver | 1 |
Install the middle section
- Remove any temporary bolts holding the motor to the bottom plate while keeping the motor and pulley aligned.
- Place the standard middle section between the motor and bottom plate.
- Insert the four M5 × 35 mm bolts from the motor side through the middle section.
- Fit the M5 nuts at the back of the motor.
- Tighten the bolts gradually in a cross pattern so the middle section seats evenly.
- Confirm the pulley and belt remain aligned and rotate freely by hand.
All four fasteners are secure, the housing sits square, and the belt tracks without rubbing the printed body.