Difference between revisions of "Laser CNC"

From DiLab
Jump to: navigation, search
(Inkscape Extensions: Gcodetools)
(Inkscape for Laser cutting)
Line 13: Line 13:
  
 
= Inkscape for Laser cutting =
 
= Inkscape for Laser cutting =
Good and short tutorial videos:
+
A few short and useful tutorial videos:
 
* [https://www.youtube.com/watch?v=Dwqlf5iirbM Laser Cutting With Inkscape Tutorial]
 
* [https://www.youtube.com/watch?v=Dwqlf5iirbM Laser Cutting With Inkscape Tutorial]
 +
* [https://www.youtube.com/watch?v=6gvnLMa58qQ Inkscape with Jtech Laser Tools plugin for g-code]
  
 
Notes: about Inkscape and Linux
 
Notes: about Inkscape and Linux

Revision as of 00:23, 6 January 2020

Laser Cutting and engraving

Life cycle:

  1. Design the 2D object (Inkscape, or any graphical editor)
  2. Export to a compatible format: Gcode or DXF
    • Use Inkscape extensions to generate the g-code, such as
    • Gcodetools - included with Inkscape, but not as well supported
    • Jtech Laser Tool plugin
  3. Send it (the G-code program or DXF file) to the laser cutter. This is usually done with another program, such as

Inkscape for Laser cutting

A few short and useful tutorial videos:

Notes: about Inkscape and Linux

Inkscape extensions: Gcodetools

Problem1: python 2.7 vs 3 for gcodetools

  • There is an extension for Gcode export.
  • It appears to be written for Python 2, while the newest Inkscape appears to be running Python 3. There might be problems with running the extensions. Change the default version for python to be 2.7 like this:
    • Open Inkscape preferences, usually here: ~/.config/inkscape/preferences.xml
    • Search for
<group
    id="extensions"
    …
    org.ekips.filter.gears.pitch="20"
    org.ekips.filter.gears.angle="20" />
    • Change to - add the following:
<group
    id="extensions"
    python-interpreter="/usr/bin/python2.7"
    …
    org.ekips.filter.gears.pitch="20"
    org.ekips.filter.gears.angle="20" />

Problem2: unittouu

After running gcodetools extension you may get the error:

AttributeError: 'module' object has no attribute 'unittouu'

The solution is to update the gcodetools.py as follows. For me, this was on the line 5864 where inkex.unittouu() is called. The problem is that it is referenced as

doc_height = inkex.unittouu(...

Fix this as follows:

doc_height = self.unittouu(...

Inkscape extensions: JTechPhotonics

Alternative, easy to use extension for inkscape to create gcode is J Tech Laser Tool Plugin

Resources