SnapMaker U1 Main control board 60mm Fan mount (Remix of ntchris)

Remix Model

This remix builds on ntchris’s modular Snapmaker U1 mainboard fan mount, which provides active cooling for the PCB and XY stepper drivers.

When installing the original design, I found the clearance and alignment too tight while mounting the brackets with the fan attached. To solve this, I replaced the fixed mounting holes with slotted adjustment channels on both sides. This added tolerance makes the installation sequence much easier and frustration-free:

1. Secure the mainboard base screws fully.

2. Route and manage all cables comfortably without pinching.

3. Drop the fan and bracket in place, slide into alignment, and tighten the fan screws last.

Thermal Results:

In my testing with the top chamber cover on, this setup reduced driver temperatures from ~100°C down to 65°C.

Fan Used

I used a SUNON 24V 6015 fan (MF60152V2-1000U-A99). It shares the exact dimensions of the stock fan on the right side, fits cleanly within the chamber clearance, and matches the native 24V system voltage—so no step-down buck converters are needed. Plus, it runs significantly quieter.

Hardware Used

• 4× Original Stock PCB Screws (reused to secure the base mounts to the mainboard standoffs)

• 4× M3 Screws (screwed directly into the plastic base holes through the adjustment slots—no heat-set inserts needed)

• 4× M3 Screws & 4× M3 Nuts (to secure the fan to the bracket arms)

Print Settings

• Filament: PETG-GF recommended (Standard PETG, ABS, or ASA are also fine).

  Note on Material: Avoid PLA. The ambient chamber heat and localized warmth from the stepper drivers will cause standard PLA to soften and creep over time.

• Walls / Perimeters: 3 to 4

• Infill: 30% to 40% (Gyroid or Grid recommended)

• Supports: No

• Brim: No

Thanks to ntchris for the great original design and inspiration!