Sapphire Plus with 3 board ventilators

Sapphire Plus with 3 board ventilators

thingiverse

My printer is showing problems with temperature swings of the hot-end. One of the solutions is to increase the number of ventilators that cool the MKS board from 1 to 3. The ventilators are connect to the power supply instead of the board. I also re-routed the wires to/from the board so the air-flow is more free of obstructions. Did it help ? No, I still see temperature swings of the hot-end.

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