Mounting Bracket for BMCU 370 Hall Z-Axis A1 Mini

Rotatable and slidable version of mounting bracket. Support horizontal mount also

• BBA1 Mini:  Visit here V2
• BBA1: Visit here V2

This is a 3D-printed mounting bracket system designed to hold a BMCU 370 Hall motor (not included) on the Z-axis of the Bambu Lab A1 Mini 3D printer.
It provides a secure and precise interface for attaching one or multiple extruders or modular heads using BMCU motors. Ideal for DIY mods, multi-extrusion systems, or experimental setups.

✅ Compatible with the top of the A1 Mini’s aluminum Z column
✅ Includes V-slot sliding insert and top mounting plate
✅ Supports multiple motor heads in a compact layout
✅ Clean, snap-fit aesthetic with screw mounting points (M3)

Note: This file only includes the bracket parts. Motors and extruders are not included.

Recommended material: PETG or ABS
Printing tips: Oriented for minimal supports; M3 screws recommended for mounting

Real-world use case:
As shown in the photos, the bracket can hold up to four BMCU 370 Hall extruder heads, mounted vertically above the Z-axis, ready for switching or swapping in a modular toolhead setup.