This is a version of the CNCKitchen Extrusion Test Structure generated using FullControl, a gcode generating python package.
To use, follow this link to the github Gist and click the ‘open in colab’ button. Once open, read through the Readme and it explains which parameters to change, scroll down to the second code block and change to suit you're needs. Then run the notebook by the top Menu “Runtime - Run all” and the gcode should download.
Check this in whatever gcode viewer you prefer and print. The testing procedure to calculate you're maximum flow rate is explained in the notebook!
I've also included a sample .gcode here, for testing between 5mm3/s to 20mm3/s at 200C with a bed set to 50C.
The author remixed this model.