DIY homebuilt 3 axis CNC router, unique fully enclosed benchtop design FAST

Homebuilt 3 axis CNC router. This is a fully enclosed design that fits on a workbench. The cutting area is about 16" x 16" x 5.5". X and Y axis are belt drive to achieve high cutting speeds. The cost to build this was less than $450 (not counting the electronics or the router) and requires no special tools to build. No welding, no machining, just basic woodworking skills. It uses a laminate trimmer as the spindle. All linear motion bearings are micro-adjustable so it can be adjusted to a high level of accuracy. The machine is set up with a Xylotex drive board and their 276 oz/in stepper motors. Plans and very detailed build instructions for the machine are available for sale on Ebay. The plans are in a 140 page manual that also includes general information about CNC and CAD/CAM, and even includes a section about machine design if you are interested in building something different than this. Search for my user id: momus_design

http://cgi.ebay.com/new-CNC-3-axis-router-table-mill-machine-engraver-PLANS-/...

Category:

Science & Technology

Tags:

• CNC
• CNC router
• Momus Design
• DIY CNC
• +diy

[karandex]

what is the torque, is there any gear reduction ?

[momusCNCdesign]

@karandex They are 276 oz/in motors. No gear reduction, direct drive with 10 tooth pulleys (XL pitch), which keeps the motors turning at low rpm where they are making the most torque.

[jdmissioncontrol]

I purchased your plans today on ebay. I have about 15,000 hours programming and running cnc machines at shipyards. I purchased several different sets of plans off of the internet, to perform a comparative analysis before I decided which unit to build.

Your plans are by far, the most detailed, and well thought out. Most of the other small machines scream of vibration & dust. As a professional 3d cad designer, I salute you. Excellent workmanship! I'm off to start gathering materials!

[momusCNCdesign]

@jdmissioncontrol Hey, thanks for the kind words. After building a few other designs, with exactly the problems you describe, I designed this machine from the ground up. Rethinking every assumption to solve all the problems that I could think of. I've been very happy with the outcome, and it has been a very reliable and easy to use piece of equipment.

Good luck with the build and post some photos or video somewhere if you can.

[lenne0815]

nice, how much play in the belt drives ?

[momusCNCdesign]

@lenne0815 With them tensioned correctly there is no play or backlash. The axes are short enough that the belt drive is pretty stiff. I can get a tiny bit of stretch in the X axis belt (front to rear axis) if both the feedrate and the acceleration/deceleration are set very high and it is cutting something like a 90 degree angle where it needs to do a full stop before rapidly changing direction. Then I get like .020" of stretch. But that is an extreme situation. Perfect in normal use.

[landiancl]

I like the video very much! I think the carving-cnc com may help us, its very professional.

[bobbobmarley27]

wew

[karandex]

what is accuracy ?

[karandex]

@momusCNCdesign how far can i extend the axis? i want to make it 24 by 24

[karandex]

please give me free plans, i cant buy them

[karandex]

@momusCNCdesign what is resolution and repeatability you can achieve ?I am really interested in machine but i live in India so i cant buy it. Can you send me some part involving drive system?

[omninate]

My comment will sound JUST like jdmissioncontrol... :)

I just purchased your plans from ebay, and they look top-notch! I have only given it the quick once-over so far, and must read in much more detail before I really get my hands dirty, but these truly look fantastic! I have the Rockcliff book, and have looked through TONS of online hobby CNC plans, but nothing really struck me as well-designed until I saw your setup.

Thanks for putting in all the hard work to come up with a great design!