I love what ProfessorBoots (https://www.printables.com/@ProfJohnny_823077) has done for the 3D printing community. Please support ProfessorBoots for all of his work to make these models come to life. It does take hundreds of hours to make these models, electronics, and software. https://professorboots.com/products/professorboots-workshop-pass
I like to create 3D models that follow these criteria:
The author remixed this model.
I modified the files to add bearings, reduce print time, optimized for 0.4mm nozzle.