CNC Router

We have a Shapeoko 2 and a Phoenix-GS5 CNC router. The Shapeoko is a small, light duty but simple to use machine with a 2x2' cutting area. The Phoenix is substantially more robust, has a 4'x4' cutting area, and uses a workflow similar to our other CNC machines (plasma, tormach).

Workflow

The CNC router workflow looks very much like that of the Tormach and the CNC plasma cutter. Step one is to create a drawing that you want to cut (CAD), step two is to assign paths for tools to follow (CAM), and step 3 is to send the gcode created by the CAM software to the machine controller. There are many ways to complete this workflow, but included in this section are descriptions of how to make a successful cut with two different sets of software. The first is the most simple, the second slightly more challenging.

Inkscape -> SheetCAM -> LinuxCNC

One method of getting from idea to CNC routed part is to create your CAD design in Inkscape, then use SheetCAM to generate the tool paths. If carving a 2D design like a sign, this is the quickest and simplest method. See the [[cnc-plasma-cutting|CNC Plasma]] guide to following this method.

 

FreeCAD -> LinuxCNC

Another method of using the CNC router is to use a program like FreeCAD to generate your 2D or 3D model, then also doing the CAM within FreeCAD. The benefit to this approach is that everything is done in a single program, and that the program is significantly more powerful and capable of handling 3D designs.

 

 

 

Shapeoko 2

The Shapeoko can also be controlled with the workflow described above, but it also comes with a software package called Easel, which is meant to simplify the process.

Method 1 - Easel to Shapeoko

  1. Login to Easel using the credentials found on the CNC router.
  2. Draw a simple design directly in Easel, or design something in Inkscape, save as an SVG and import into Easel.
  3. In the top right of the Easel interface, choose your material type (this determines safe feed rates) and material dimensions
  4. Select the bit size you intend to use
  5. Arrange your design in the workspace and set the final depth of cut that you'd like.
  6. Unplug the Shapeoko
  7. Manually move the router head to the front left corner, and manually rotate the Z-screw until the tip of the router bit is touching the top of your workpiece. This is your zero position that corresponds to the bottom left corner of your Easel workspace.
  8. Plug in the Shapeoko
  9. Click the Carve button in the very top right to start cutting the design.
  10. Babysit the cut until it's done

Method 2 - Gcode to Shapeoko

Another method of operating the Shapeoko is to send it gcode directly. There are many ways to generate gcode, but one method is to create something with Easel, then export the gcode from Easel and import it into Universal Gcode Sender. In Easel, go to Machine > Advanced > export gcode.

The Linux computer connected to the Shapeoko sends gcode to the router using a program called Universal Gcode Sender. You can find it under Applications>Graphics>UGS.

UGS Instructions

Here are the basic steps to setting up your cut and using Universal Gcode Sender.

  1. Unplug the Arduino and manually move the router to the zero point that you want to use. Using the grid on the waste board is recommended.

  2. Clamp your piece.

  3. Plug in the Arduino.

  4. Open the serial connection to the Arduino in UGS.

  5. Load the gcode file

  6. Use the visualize path tool to make sure that the cutter isn't going to crash into your clamps.

  7. Make sure the cords aren't going to get tangled.

  8. Vacuum the tracks.

  9. Send the gcode.

  10. Turn on the router.

  11. Vacuum throughout the operation.

  12. When the operation is done, the router will return to home. Turn it off and unplug the Arduino.

 

Phoenix-GS5 Tech Specs

 

Troubleshooting

Communicating with GRBL