Thank you very much for your prompt, thorough response. I haven’t had a chance to implement your suggestions. I have more questions, though!
You mention increasing the pressure with hinge stiffness. Where do I get stiffer/softer hinges? I installed the hinge that came with the engraver.
You mention increasing the pressure by changing pen arm height. My pen arm is at the lowest. By the “two position setpoints for the pen-lift servo motor,” do you mean moving the whole servo motor assembly lower on the pen arm? There seems to be two holes there.
Can I also lower the pen rotational motor in the eggbot chassis?