Change kerf-offset in InkScape for lasercutting


Magic spell to post process svg or other drawings for lasercutting kerf
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Step 1: Change kerf-offset in InkScape for lasercutting, by A Koene.
== To be freely distributed in opensource communities. ==
Thx to ‘ragistan’ on https://alpha.inkscape.org/vectors/www.inkscapeforum.com/viewtopic8101.html?t=18634
My situation:
-From Freecad 0.21, export Shape2DView’s as ‘Autodesk 2D .dxf’.
-Open in InkSkape 1.3.
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Step 2: Prepairations
-Set Stroke style > Width to ‘Hairline’.
...
-menu > Path > Combine [ctrl][k] to get one path for each item:
Result is a combined path (Afterwards, you can ‘Break apart’ if you want)
- Node Tools > Edit path by nodes [n]
You see:
-In tree, select all combined items to be given an offset:
-Select all nodes (!!) with [ctrl][a]. You see blue indicators:
–Join selected nodes [shift][j]
(An invisible change is applied to the selected items! Or???)
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Step 3: Apply Kerf Offset
-For offsetting, selection of only 1 path, shape, clone or Group is permitted.
- menu > Path > Path Effects… [ctrl][&], ‘Add live path effect”: Offset
- Change Offset as you whish.
(Negative for other side/direction. For lasercutten: kerf / 2 ?)
-Change colors of the result-paths, etc.
-Save as .dxf R14.
-If you get this, then you didn’t select all nodes with [ctrl][a] before ‘Join selected nodes’.