New CNC build using 80/20 extruded aluminum - Router Forums
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post #1 of 47 (permalink) Old 11-30-2010, 02:05 PM Thread Starter
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Talking New CNC build using 80/20 extruded aluminum

Even though I don't know jack about electronics, I've embarked on a journey to build a CNC. I've looked at different plans for some time using MDF or plywood, but I've read a few threads about not using wood for the main structure (such as Check twice!'s build: New-build-cnc-router )

I even bought 2 DIY plans, one for a Rockcliff and the other for a Solsylva. Instead I'm going the Erector-set route and buying modular parts and extrusions. I think the most challenging part will be the electronics/software. I'm sure I'll be asking questions and hope I'll get help from time to time. I'm on the CNCZone, but that place is like a maze trying to sort through it sometimes.

The useable area is about 2ft x 3ft, and I think it will cost about $1,700. That is cheaper and have a larger working area than Rockler's smallest CNC I believe.

Most parts are from CNCRouterparts.com, and my electronics are from Finelineautomation.com since they had $50 off for Black Friday.

Basics:
Electronics: Gecko G540 pushing 3 High-torque Nema 23 380 oz-in stepper motors finelineautomation 3 Axis Electronics Kit

Mechanical: Using Linear carriages that are basically ABEC 7 rollerskate wheels that ride on 1/4" thick cold rolled steel flatbar: cncrouterparts mechanical parts
(also purchased all necessary mechanical parts from them).

And the leadscrews are 1/2-10 5-start ACME threaded rod McMaster #98940A627

The 80/20 1530 & 3030 extrusion (1 1/2" x 3" & 3" x 3") is from the 80/20 Garage sale on Ebay. 8020inc

I'll be using my Porter Cable 690 router motor for the spindle.

For a general idea of what it will look like see this build: glacialwanderer

By the way, Fineline sells complete kits including all holes drilled in the extrusions and flatbar, but I'm saving money buy doing it myself.

I still need to buy:
ACME rod
Cold rolled steel flatbar
Mach 3
Emergency Stop
Limit switches
Wire/cable
Fasteners/hardware

Wish me luck
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post #2 of 47 (permalink) Old 12-22-2010, 11:26 PM
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post #3 of 47 (permalink) Old 01-02-2011, 12:19 AM Thread Starter
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I bought the cold rolled steel flatbar cut to length from Metal Supermarkets LINK, but since they have a Dallas location, I didn't have to pay for shipping since I picked it up in person.

I cut all the aluminum extrusion to length. Now I have to drill some holes in both the 80/20 and the flatbar, tap a few ends of the 80/20, then I can start to assemble them.

I still need to buy a few corner pieces and joint plates to stiffen up the joints, but other than that, I have pretty much everything now.

Here is a vid of me bench-testing the steppers: X,Y,Z stepper test LINK

And here is a vid of me trying out the e-stop: Testing E-stop LINK

Oh yeah, I bought a wired XBox 360 controller (for Windows) and installed the XBox 360 plugin for Mach 3. I now have a pendant to move the X, Y and Z around with it. I don't have all of the buttons mapped yet, just the X, Y, and Z. I plan on mapping one of them for the auto-zero function.
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post #4 of 47 (permalink) Old 01-26-2011, 02:09 PM
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This is sounding pretty awesome, what CAM software are you using to run your machine?
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post #5 of 47 (permalink) Old 01-26-2011, 02:57 PM
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I love the wireless 360 controller, I couldn't live without it now! Why did you go wired?
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post #6 of 47 (permalink) Old 01-28-2011, 10:06 AM
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Default ext 80/20 cnc

Nice build, where did you use the 3'x3'? Is it for the y axis.
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post #7 of 47 (permalink) Old 01-28-2011, 11:03 AM
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Default New CNC build using 80/20 extruded aluminum

That little bit of 8020 ext cost $584.00 ?
Pretty expensive.
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post #8 of 47 (permalink) Old 01-28-2011, 11:03 AM
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Default New CNC build using 80/20 extruded aluminum

Sorry previous post 3 inch x 3 inch
Thanks
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post #9 of 47 (permalink) Old 01-31-2011, 03:10 PM Thread Starter
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Quote:
Originally Posted by Trevor Walsh View Post
This is sounding pretty awesome, what CAM software are you using to run your machine?
I'll be using Cut 2D from Vectric for starters, but I'm thinking about getting Meshcam because I would be able to import .stl files from Solidworks.
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post #10 of 47 (permalink) Old 01-31-2011, 03:16 PM Thread Starter
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Quote:
Originally Posted by dovetail_65 View Post
I love the wireless 360 controller, I couldn't live without it now! Why did you go wired?
I've heard that the wireless 360 controller batteries didn't last very long. I was going to get rechargeable batteries, but when I went to Gamestop all they had at the time was wired controllers. I looked at it as a 1-time payment without having to buy batteries for it.
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