!!!WARNING!!! Etching number change!!!!
These instructions are based on the instructions from this page: http://www.richa1.com/RichardAlbritton/create-g-code-from-an-eagle-file/
Prepare your Eagle PCB
NB: See the PCB Manufacturing Check Sheet for the most up to date values |
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Adding PCB-GCode to Eagle
- Download the latest release of PCB-GCode (Utility for EAGLE)
- With the PCB board that you want to mill file opem
- Click the Run ULP button at the top of the page
- Click the 'Browse' button in the dialog box and copy the file path of the ulp folder
- Close the ULP dialog boxes
- Extract the PCB-GCode ulp that you download to the file path you copied
- Now click the Run ULP button at the top of the page again and click browse
- You should now see 2 ULP files, run the 'setup' one when you are ready
Export G-code from Eagle
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Milling a PCB
Setup PCB on mill
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Zeroing CNC bed
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Create a heightmap and mill
Your PCB will not be 100% flat despite your best efforts. Luckily grbl Control can measure how off level your PCB is and compensate for this by making a height map. Make sure your work is firmly secured, it should not flex on the corners!
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Drilling
When your engraving has completed level the board taped to the bed, if it doesn't move and you keep your Zero XY coordinates the same the mill can drill your holes too!
The gcode exported from eagle has instructions for changing drill bits for the different sized holes... the firmware on our mill can't do this sadly. It will go through all the motions but will not pause to allow you to change the bit. I will work on fixing this one day. |
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Milling
You can also mill around your board (cut it out). Follow the instructions for drilling above but use a 1mm milling bit instead. Make sure when you exported your mill GCode it have a very very low feed rate (mill at 50 or less)!