OpenBuilds Sphinx 55 (20" x 20")

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  • OpenBuilds Sphinx 55 (20" x 20")
  • OpenBuilds Sphinx 55 (20" x 20")
  • OpenBuilds Sphinx 55 (20" x 20")
  • OpenBuilds Sphinx 55 (20" x 20")
Frequently bought together:


The Sphinx is a super strong and accurate easy to assemble CNC machine. It takes advantage of the inside tracks of the C-Beam linear rail using Xtreme Mini Solid V Wheels and utilizes the top of the rail with full size Xtreme Solid V wheels.
Many thanks go out to OpenBuilds member Kyo for sharing this awesome open source design!
Travel (Work Area)
X Axis 13" (333mm) / Y Axis 12.5" (325mm) / Z Axis 3.2" (~85mm)
Workable Material Height
2.25” ( ~57mm ).Based on a 1/2" spoiler board stack
Drive System:
Lead Screw Driven
Machine Accuracy
0.001"~0.003" (0.05mm~0.10mm)
20" x 20" (500mm x 500mm)
This kit includes all the necessary Parts to assemble your machine. (Complete part list). Note: 1/2" waste board not included (available at local hardware store, recommended size H1/2" x W19-1/2" x L16-1/4").

C-Beam Linear Rail

8mm Acme Lead Screw

Sphinx Plate Set

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


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



3 Reviews

  • 5

    Posted by Ben on Jun 11th 2020

    I'm very happy with my new Sphinx 55, now that I have it properly assembled. It's cutting plastic (OKW Enclosures) and aluminum beautifully. I finally got it set up just shy of 3 weeks after I placed my order. It took more time than I had anticipated to put it together. The components were very well packaged, so it took a considerable amount of time just to unpack everything. Unfortunately, a few things were missing (replaceable with 2 trips to the local hardware store over the course of assembly) and one of the BlackBox motor drivers was defective, but the OpenBuilds support was fast and helpful and got me up and running in fairly short order. If the size meets your needs, I highly recommend this machine, particularly with the default options (BlackBox controller & power supply, Dewalt router, NEMA 23 motors, etc). In case it helps, I'm using Tap Magic and a simple air system for cooling while cutting aluminum.

  • 5
    Awesome machine

    Posted by Juan R. on Feb 19th 2020

    I bought a Sphinx 55 a few weeks ago. Took a few days for me to assemble with a few hours each day. The assembly video is excellent and easy to follow. So far with this setup I have cut MDF and Aluminum and it has been great and accurate. I am very excited to work with this machine and to learn more about cnc in general. The OpenBuilds Control software is easy to use and setting up your machine is a snap with the prebuilt profiles. I highly recommend this machine.

  • 5
    OpenBuilds Sphinx 55 (20" x 20")

    Posted by Robert Hitchins on Sep 17th 2019

    Absolutely awesome build. Everything went together perfectly on the first try and the build video was spot on and accurate.

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