![Hot end heating issues. Tried PID tuning at multiple temperatures. Printer is from 2016, old i3 pro b (geetech) prusa knockoff. A student in our ab lab is trying to get this Hot end heating issues. Tried PID tuning at multiple temperatures. Printer is from 2016, old i3 pro b (geetech) prusa knockoff. A student in our ab lab is trying to get this](https://i.redd.it/20ek70v81wr71.jpg)
Hot end heating issues. Tried PID tuning at multiple temperatures. Printer is from 2016, old i3 pro b (geetech) prusa knockoff. A student in our ab lab is trying to get this
![Anyone recommend a good fan duct for the Anet A8? I've tried 3 so far and keep getting thermal runaway halts. : r/3Dprinting Anyone recommend a good fan duct for the Anet A8? I've tried 3 so far and keep getting thermal runaway halts. : r/3Dprinting](https://preview.redd.it/7rxzp3ac45651.jpg?width=640&crop=smart&auto=webp&s=cdd25a779c7892b677a5cacc336c1f1c05956d23)
Anyone recommend a good fan duct for the Anet A8? I've tried 3 so far and keep getting thermal runaway halts. : r/3Dprinting
![calibration - How to reduce +/- 5 degree temp swings of hotend (after PID tuning) - 3D Printing Stack Exchange calibration - How to reduce +/- 5 degree temp swings of hotend (after PID tuning) - 3D Printing Stack Exchange](https://i.stack.imgur.com/I3HxO.png)