MARKO Mount for the Unitree Pump Max

MARKO Mount for Unitree PUMP MAX – Improved Rack Attachment

The stock rack mount for the Unitree PUMP MAX is frustratingly clunky and difficult to adjust between posts. To solve this, I designed a custom 3D-printed mount that makes repositioning fast and effortless.

Key Benefits

• Smooth sliding and easy repositioning on rack posts
• Secure and stable hold without creaking or flex
• Built specifically for rack integration – no more fighting with the original mount
• Tested to support up to at least 70kg in all directions without failure (material and print instructions must be followed)

Mount Compatibility

• Designed for 3x3” power racks with 1” (25 mm) holes
• Tested on REP Fitness PR-5000
• May fit similar racks, but confirm dimensions before printing

Mounting Hardware

• I used spare bolts that came with my rack
• You can likely some sort of gym pin

Print Instructions (Must Follow Exactly)

• Material: PETG only (other filaments were not tested and may fail)
• Walls: 12–14
• Infill: 60% (avoid 100%)
• Nozzle: 0.6 mm recommended for max strength; 0.4 mm works too
• Layer Height (tested): 0.16 mm

Strength Testing

• Tested with 0.4 mm nozzle, 14 walls, 60% infill
• Held 70kg of weight in every direction without any deformation or structural issues
• PUMP MAX max resistance is 70kg, so test limit matches max use case

⚠️ Warnings

• The PUMP MAX is heavy and unbalanced when mounted—hold it securely when removing pins or bolts to avoid tipping or dropping.
• The mount was tested in my environment and it works without issue, I can not confirm how you use it, so I can't guarantee a lack of failures
• Do not use PLA. Use PETG only and follow wall/infill specs for safety.
• Ensure the PETG is extremely dry before printing