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I have finished testing Kort nozzles and propellers and will at some point post the results on the Kort nozzle blog.
My printer has started to do silly things. Like going into thermal runaway on the hot end. The other day it was getting ready to print at 210°C, then I could smell hot plastic and looked up to see it at 270°C and rising. I have changed the hot end, thinking it might be the thermistor temperature sensor but it still does it. It is only intermittent and I am starting to think the MOSFET that controls the power to the hot end by PWM is breaking down. So it will be mother board out and do some tests.
I have spent most of this week getting over Covid and fixing a 150 Watt powered sound mixer. That was interesting. I managed to get the schematic from the Australian manufacturer, which helped in tracing the faults. All working now and going back to my musician friend 😀.