Hey everyone,

I’ve just finished building a custom CoreXY printer using a Duet 3 board, a Smart Effector, and a high-flow hotend. The setup runs great overall, but I’m running into some issues with temperature stability — especially during longer prints with higher flow rates. The hotend temperature tends to drift a bit, and I’d like to tighten it up.

I did the usual auto-tune, but I’m wondering if there are better ways to manually fine-tune or improve stability, especially for materials like ABS or Nylon that are a bit more sensitive. Has anyone dealt with this kind of issue on a similar setup?

Any advice or experience you can share would be really appreciated!