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OpenBuilds MiniMill

(1 review) Write a Review
  • OpenBuilds MiniMill
  • OpenBuilds MiniMill
  • OpenBuilds MiniMill
  • OpenBuilds MiniMill
  • OpenBuilds MiniMill
  • OpenBuilds MiniMill
  • OpenBuilds MiniMill
  • OpenBuilds MiniMill


Lead screw precision on all 3 axis. Portable. Expandable. Includes FREE ACCESS to OpenBuilds Software.
With a work area of about 5 x 5" it can handle most part projects. Grab your OpenBuilds MiniMill today and bring your ideas to life.
Travel (Work Area)
X Axis 4.5" (120mm) / Y Axis 7" (180mm) / Z Axis 3" (~80mm)
Workable Material Height
2.5" (~60mm) Based on a 1/2" spoiler board stack
Drive System: 
Lead Screw Driven
Machine Accuracy
0.001"~0.003" (0.05mm~0.10mm)
22" x 16" (560mm x 406mm)
Bundle Contents
Include all the necessary parts to assemble your machine. (Complete part list). Note: 1/2" waste board not included (available at local hardware store).

C-Beam Linear Rail

8mm Acme Lead Screw

Xlarge C-Beam Plate

Xtreme Solid V Wheel

Wiring Kit

Assembly Hardware

Complete your Machine with these popular add-ons.
Motion Control

24V Power Supply

NEMA 23 Stepper Motor

Dewalt 611 Router

Dust Shoe

INCLUDED at no additional cost - OpenBuilds CAM and CONTROL software is everything you need to get started making.
OpenBuilds CAM
OpenBuilds CONTROL

Profesional CAD / CAM Software

Materials you can Mill/Cut/Carve & Engrave
Get creative with OpenBuilds materials and watch your projects come to life.

Cast Acrylic

Wood Soft / Hard


Non Ferrous Metals



Easy follow along assembly video – top notch awesome community support – open source files and documentation and examples.
3D Model Resources
Free 3D models of the OpenBuilds Component Library.
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1 Review

  • 5
    Opeenbuilds MiniMill

    Posted by Frank Kaylor on Jan 9th 2019

    I received the MiniMill kit just a few days ago and am in the process of completing the build. All of the mechanical parts are complete and I'm now working on the electronics. The kit was very well engineered and I am sure it will be a great companion to my large OPENBUILDS CNC Router. The assembly video was very helpful...I've just about memorized the script..."Looks good...On to the next step!"

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