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CNC-2116 - Up and running, sort of (2015-03-21)
Yvan256:
--- Quote from: drventure on August 14, 2011, 11:18:07 am ---Looking forward to this thread. I've wanted to do the same thing, but don't really have space.
Maybe after you're build, I'll find space :)
--- End quote ---
A small CNC that can cut 10x10 inches panels wouldn't be much bigger than a big desktop laser printer.
Yvan256:
Here's a small preview of the design, the X and Z axis are pretty much done and I only need to finalize some details about the Y axis. The goal is to keep it simple to cut and build to minimize the errors and alignment problems.
Yes, the bearings will be grinding the aluminium angles, but since I will only be using the machine a few hours every month at most, it shouldn't become a problem for a relatively long time. This design also allows easy replacement of the dual skate bearings with v-groove bearings without having to re-cut any panel.
nox771:
--- Quote from: syph007 on August 15, 2011, 10:48:11 am ---Glad to see you start this thread. Im in Canada too and have been wondering how hard sourcing parts will be. Can I ask where you found your steppers?
--- End quote ---
If local sources don't work for you there are a couple places I know of:
http://www.kelinginc.net/index.html - I got some heavy duty steppers from this place (I'm building an aluminum extrusion CNC). They have the drive electronics also. Good place for heavy duty steppers - not cheap, but durable.
http://www.allelectronics.com/make-a-store/category/400/Motors/1.html - I ran across this place recently, they are always sending me mail (I'm in the US btw), but I never really checked them out. Finally one day I did - out of their whole site the motor section looked most interesting to me. Turns out they have a lot of small motors, and quite inexpensive also. Some look pretty good too, like these:
http://www.allelectronics.com/make-a-store/item/SMT-119/4-LEAD-1.8-DEG-STEPPER-MOTOR/1.html
http://www.allelectronics.com/make-a-store/item/SMT-363/4-WIRE-STEPPER-MOTOR/1.html
I haven't bought from these guys yet, but if I were to make a tabletop sized CNC I might try them out.
Yvan256:
--- Quote from: nox771 on August 18, 2011, 02:13:45 am ---Some look pretty good too, like these:
http://www.allelectronics.com/make-a-store/item/SMT-119/4-LEAD-1.8-DEG-STEPPER-MOTOR/1.html
http://www.allelectronics.com/make-a-store/item/SMT-363/4-WIRE-STEPPER-MOTOR/1.html
--- End quote ---
Just to simplify your life, unless you're buying the stepper drivers, get motors with 5 or 6 wires. The 4-wires motors need a completely different driving method. And as I mentioned above, try to get 5v or 12v motors so you can easily find power supplies for them.
Yvan256:
Trying to optimize the panels on a standard sheet of 4x8' while also trying to minimize the number of cuts required. Panels are colored for easier comprehension. Also shown is the aluminium angles and 3' threaded rod.
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