Klipper config question: run_current

[th0mpy]

I've been working with two different Galileo extruders on my machines. I've noticed that when I push them, the extrusion seems poor. Mechanically everything is sound, and if I run slow the extrusion is great. My theory is that there's not enough torque and I'm skipping.

I'm experimenting with a run_current of 0.8 versus 0.6, which in theory would increase the torque of the motor, reducing the potential for skips.

My question, is there a reason to run at 0.6 versus 80% of the max current rating for the stepper?

[JaredC01]

The 0.6A run current for the E in particular is mainly due to heat. The stepper can handle 0.8A, but some people get worried about the temperature of the stepper, and since it's in the chamber, depending on your chamber temp, it can be even hotter. The Z drives are recommended 0.8A because they're not in the chamber, just for reference.

Feel free to push it higher to 0.8A. I run 0.6A or 0.65A on mine most of the time, and I've hit 70 cubic flow with a Chube and a 0.5mm Bozzle Nozzle without signs of extrusion issues, so it should be down to your specific setup as to what you can push for flow.