My buddy just moved into a new apartment and was forced to downsize his workspaces. As a result, he sold me his partially assembled Zenworks CNC for CHEAP. I immediately set out to get it up and running.
This Page Isn’t FinishedI’ve dumped content here for later update but still need to circle back and fill out the story behind it. After you’ve tried to make sense of the fragments below, visit “Hi, I’m Nate” above for more info about this site —NHB
- 1 How I Got This Machine
- 2 Building a Base Cabinet
- 3 The Power Supply
- 4 Arduino & Motor Controllers
- 5 Final Assembly
- 6 Firmware & Calibration
- 7 First Cut
- 8 Leftovers & Total Costs
How I Got This Machine
A buddy of mine just moved into a smaller apartment downtown, and was forced to downsize his workspaces. As a result, he sold me his partially assembled Zenworks CNC for cheeeeap, and I immediately set out to get it up and running.
For $260, I Got…
Preparing For Refurb
When I got the machine, it was a spider web of cables and crimps. Step 1 for me was to strip all of the pieces off to begin cleaning it up.
Running New Wires
Building a Base Cabinet
The Power Supply
Designing an Acrylic Carrier
Laser Cutting the Acrylic Carrier
Installing & Wiring Components
Cost Breakdown – Power Supply
|48VDC 7.5A Power Supply||$35||Provides primary power to spindle + feeds the Arduino DC Buck Converter.|
|12VDC x 8A Power Supply||$14||Provides primary power to DC stepper controllers,|
|DC to DC Buck Converter||$10||Steps the 48VDC spindle power down to 5VDC for the Arduino.|
|4-Pin “Aviation” Connector||$3||4-Pin Connector: Ground + 48VDC + 12VDC + 5VDC|
|M5x15mm Brass Standoffs||$4||M5x15mm Brass Standoffs|
|M3x5mm Brass Ferrules||$3||M3x5mm Brass Ferrules|
|M3 x 10mm Alloy Steel Hex Bolt||$3||M3 x 10mm Alloy Steel Hex Bolts|
Arduino & Motor Controllers
Pinout & Wiring
Designing & Laser Cutting Carrier
Cost Breakdown – Arduino & Controllers
|Arduino Uno r3||$25|
|Stepper Driver (x3)||$105|
|M3 15mm Brass Standoffs||$0.153/ea|
|M3 Knurled Nut Threaded Insert||$0.05/ea|
|Scrap Acrylic||$1.40/lb (€2.61/kg)|
Helpful Limit Switch Docs on the Shapeoko Forums.
About Arduino Inputs
Zenworks suggests NC wiring.
200 Steps/Rev. (1.8deg/step)
But what about polarity?
The spindle arrived largely intact. There’s a very small amount of runout, but I’ll wait to pass judgement until a few projects have come & gone.
Firmware & Calibration
Flashing The Arduino
Setting GRBL Parameters
Calibrating The CNC
Generating The G-Code
Sending G-Code > Arduino
Leftovers & Total Costs
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