Python module for generationg SVG plots for laser cutting boxes
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florianfesti FlexBox3: Use .move()
Use .edgeCorner() instead of own implementation
Latest commit 397cc81 Oct 19, 2018


Create boxes and more with a laser cutter! is python library for generating drawings to be used with a laser cutter. It comes with a growing set of ready-to-use, fully parametrized generators:

  • Boxes in various shapes and with various lids
  • Boxes using flex cuts with rounded corners and living hinges
  • Type trays with and without outer walls and floors
  • Shelves
  • Book covers with flex spine
  • Magazine files
  • Timing belt pulleys and gears
  • and more

And a few one trick ponies:

  • A desktop arcade cabinet
  • A drill stand
  • A castle tower
  • A cutlery stand

Have a look into the examples/ directory <>or the online generator <> to see how the results look like.


It generates SVG images that can be viewed directly in a web brower but also postscript and - with pstoedit as external helper - other vector formats including dxf, plt (aka hpgl) and gcode.

Of course the library and the generators allow selecting the "thickness" of the material used and automatically adjusts lengths and width of joining fingers and other elements.

The "burn" parameter compensates for the material removed by the laser. This allows fine tuning the gaps between joins up to the point where plywood can be press fitted even without any glue.

Finger Joints are the work horse of the library. They allow 90° edges and T connections. Their size is scaled up with the material "thickness" to maintain the same appearance. The library also allows putting holes and slots for screws (bed bolts) into finger joints, although this is currently not supported for the included generators.

Dovetail joints can be used to join pieces in the same plane.

Flex cuts allows bending and stretching the material in one direction. This is used for rounded edges and living hinges.


There are multiple ways to use the available generators:

  • Try them out at <>
  • Use them as Inkscape extensions under Extensions->
  • Execute the scripts/boxes tool and pass the name of the generator together with the measurements on the command line.
  • Run scripts/boxesserver which provides an web interface on port 8000.
  • Add a WSGIScriptAlias to scripts/boxesserver in your httpd config.

You can also create your own generators using boxes/generators/ or any of the generators in boxes/generators as a starting point.


The module comes with Sphinx based documentation. The rendered version can be viewed at <>.