OpenBuilds MiniMill CNC Machine
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!
This is an easy to build kit. Everything you need to assemble and wire the machine is included.
Choose from the add-ons to complete your fully functional machine (CNC Controller/Stepper Motors/Power Supply/Router).
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
Lead Screw Driven
22" x 16" (560mm x 406mm)
C-Beam Linear Rail
8mm Acme Lead Screw
Xlarge C-Beam Plate
Xtreme Solid V Wheel
24V Power Supply
NEMA 23 Stepper Motor
Profesional CAD / CAM Software
Wood Soft / Hard
Non Ferrous Metals
Very easy to put together following the YouTube videos. Well thought out and sturdy
First off, The Item packing is what sold me an impressed as well. Everything labeled an marked, in such a way that assembly is "EASY AS EATING PANCAKES" Videos are well done .The product item is a great entry level to Expert system with expansion in mind. Everything works perfectly, the software is amazingly simple to understand if you are a beginner. If this your first investment! You won't be disappointed. I'm proud of my choice an looking forward to building a 5 axis unit with OpenBuilds. Products. Sky's the Limit Build to reach it!
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.
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!"