BLV BMCU 370C DM Wall & A1mini Mount & PTFE Guide

📖 Description

Stop dealing with loose PTFE tubes and unsupported buffer units hanging off your printer frame! The BMCU 370C DM from BLV deserves a proper wall mount or A1 Mini Z axis top mount — one that's clean, functional, and built specifically for how this buffer actually works. This bracket is the solution I designed after not finding anything that truly checked all the boxes.

What makes this mount different:

• Rock-Solid Fixing: Mounts to the wall with 4 screws for a stable, vibration-resistant base — no flex, no wobble during print cycles.
• Native BMCU Attachment: The BMCU fastens via 4 rear screws, exactly like every other BMCU bracket out there — so the mounting pattern is familiar and compatible.
• Snap-In Retention System: Two integrated rectangular snap-in tabs engage directly into the BMCU's rectangular recess, locking the unit in place with a satisfying click and preventing any lateral movement.
• Built-In PTFE Tube Guide: A dedicated guide keeps your PTFE tubes perfectly aligned and allows them to slide freely as the buffer travels — no kinking, no binding, no stress on the fittings.
• USB Port Access: A side cutout gives you direct access to the USB connector without removing the unit from the wall. Firmware updates and configuration changes just got a lot easier.
• Lightweighted Structure: Material has been strategically removed where it's not needed, reducing print time and filament usage without compromising rigidity.
• A1 Mini Z Axis Top Mount: An additional bracket lets you mount the whole assembly directly on top of the A1 Mini Z axis — keeping everything compact, tidy, and off the wall entirely.

🖨 Printing Tips for Best Results:

• Material: PETG recommended for the snap-in tabs — the flexibility helps with engagement and long-term retention. PLA+ works fine for the main body.
• Walls: 2 perimeters minimum for clip and mounting boss strength.
• Infill: 10% Adaptive Cubic.
• Orientation: Print flat on the bed to maximize layer adhesion across the mounting flanges and snap features.

🔧 A1 Mini Z Axis Mount — Assembly Instructions:

1. Install heat-set brass inserts into the 4 corners of the bracket.
2. Remove the Z axis cover by unscrewing the black M3 screw.
3. Remove the 3 screws and set them aside.
4. Position the bracket, secure it with 3 M3×25mm countersunk screws, then reinstall the black M3 screw on the side.
5. Place the BMCU support on the bracket and fasten it with 4 M3×8mm countersunk screws at the corners.
6. Cut the PTFE tubes to the correct length and install them.
7. Run a test print to verify everything is working correctly.

Hardware required for Z Axis Mount:

• 4× M3 brass heat-set inserts
• 4× M3×8mm countersunk screws
• 3× M3×25mm countersunk screws

📦 Designed specifically for the BLV BMCU 370C DM. Always verify screw hole positions and PTFE tube diameter before printing.