Using Inkscape to Generate Gcode

Gcode Plot

1. Video 1 - [1]
2. GcodePlot extension for inkscape. Inkscape post - [2]. Github - [3]. Instructable - [4]
3. Pen holder 3D design - [5]. Simplest way - is a flat piece of plastic. Support should be 2-point for parallelogramming (goes straight down) or 4 point for straight up-down - though 2-point parallelogramming should likewise produce straight up-down. See D3D Universal#Plotter pen holder design.

Instructions

From Instructable, in pertinent part, after installing extension:

1. Restart or start Inkscape.
2. Load the SVG file you want to draw or cut into Inskcape. The lower-left corner of the page in Inkscape corresponds to the minimum X and Y coordinates you measured in the previous step. Make sure your images fit into the print area.
3. Convert the drawing to a path: ctrl-A to select everything, then Path | Object to Path.
4. Save to gcode:
   1. File | Save As...
   2. Select: "3-axis gcode plotter" ... And a massive popup comes out. Should be self-explanatory, outside of:
   3. Make the area SAME in document size as the X and Y in the output settings. Straightforward.

Exercise

1. Get your hands on SVG files. Since there are more PNG than SVG available in the wild - convert PNG to SVG first with Inkscape - [6]
2. Take a file such as . But would need to convert it to vectors. Power user material.
3. So start with a vector file - File:Axis Idler LAI SVGs.zip
4. Yes! Convert Object to Path in Path menu in inskscape
5. Export gcode.
6. How do you know g-code is valid? Use OpenSCAM - see [7]. To install a deb package, use a tool called gdebi. OpenSCAM installs under the name CAMotics. Didn't work on Ubuntu 16.04.
   1. Use https://ncviewer.com/ instead

MJ Notes

1. Installed GcodePlot for Inkscape.
2. Drew in inkscape. Set coordinates the same in Save As Gcode and in Document/Settings for the document
3. Viewed the file in https://ncviewer.com/. Line I drew showed up, but not the text.

Inkscape Notes

• Work in File -> doc properties
• In inskscape, make sure you have a correct image size
• Work in mm'
• Using a vector file, grab a corner to resize it correctly in mm
• In path menu - select Trace Bitmap
• Save SVG
• Then it's ready for the Inkscape plugin called Gcode Tools
• https://www.lifewire.com/inkscape-to-make-templates-cutting-machines-1701892 - turning letters into gcode with gcodetools - works for us
• Add G29 and eliminate pen park in preprocessing for printing

Gcodeplot Settings

• Set z working height to 0
• Make sure you are within 150 by 150 mm boundaries
• Copy start gcode. from d3d universal on homing and leveling
• See Jessica Log
• From Don Log:

Inkscape has many setting to review when exporting (save as) to gcode. The notable ones as follows:

- Precision setting should be set to 0.010 to correspond to the 10 microns of accuracy that the D3D printer is designed to achieve. - The left/right & upper/lower coordinate settings are very relevant to how the plotter arranges itself on the print bed. - Speed settings could be increased as high as 150 mm/s. NOTE: these speeds over-ride the speed settings which can manually be set on the marlin controller.

Sample Files

View these with NC Viewer

• Don - Known good plotter file File:D3dUtextPlot.gcode.zip
• Jessica - OESd4dStickpath4.zip -

Support

• It appears that the GcodePlot extension is not supported. See thread with some troubleshooting on proper install - [8]
• Russion support forum with some usage instructions - [9]
• Video - how to generate gcode in inkscape - [10]

Other Ways to Work With Inkscape SVG Files

• Export to DXF in Inkscape - [11]