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OpenBuilds MiniMill

(2 reviews) Write a Review
  • OpenBuilds MiniMill
  • OpenBuilds MiniMill
  • OpenBuilds MiniMill
  • OpenBuilds MiniMill
  • OpenBuilds MiniMill
  • OpenBuilds MiniMill
  • OpenBuilds MiniMill
  • OpenBuilds MiniMill



The MiniMill is a compact, precise 3D carving and engraving machine.

It’s capable of producing amazing 3D projects as well as high precision intricate engravings.

All this coupled with its open form factor and portability make the Minimill a great addition to any work space.

Get your 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 or purchase one of Vectric’s CAD / CAM solutions that also include great features.
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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2 Reviews

  • 5
    Great Value

    Posted by Bob Leschyna on Jul 22nd 2019

    I absolutely love it. It is a little more intricate that I had thought, but easy enough to assemble and get running. I am not new to CNC milling/routing so my expectations were not too high based on the price, however, I was pleasantly surprised with this little machine. For its size and price it seems to have a lot of potential. I have opted to not use a "traditional" router, but rather the "popular" 500 Watt 12,000RPM spindle that can be purchased almost anywhere. This did require me to make up a custom adapter plate, or interface to allow the bolting on of the spindle clamp to the Z axis, with no modification to the original MiniMill itself. I decided on this spindle mainly due to my previous experiences with it and its much quieter noise profile vis-a-vis a "router".

    Looking forward to putting it through some work, after which time, I will provide a more in depth analysis of my experience, but so far I feel it is 100%.

    Thank you OB for your great products which are only overshadowed by your superb customer service.

  • 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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