To use the open source laser welder see [http://www.appropedia.org/Laser_welding_protocol:_MOST][1]
The python code is used to generate all the .gcode files
gcode files will generate where ever you save the .py.
The latest version of the OpenSCAD files are kept [https://github.com/mtu-most/laser_welder][2]
This OpenSCAD library renders parts for the plastic film laser welder. It requires additional libraries, which are attached as a zip and updated location is:
[https://github.com/mtu-most/most-scad-libraries][3]
The STLs of the belt tighteners are originally from the MOST delta. https://github.com/mtu-most/most-delta
[1]: http://www.appropedia.org/Laser_welding_protocol:_MOST
[2]: https://github.com/mtu-most/laser_welderropedia.org/Laser_welding_protocol:_MOST
[3]: https://github.com/mtu-most/most-scad-libraries