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Temperature instability triggering thermal runaway protection.

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--- Quote from: thm_w on October 07, 2021, 09:06:02 pm ---Use a silicone sock if not already. Basically no reason all printers should not have one on.
Could you tell when you pointed the fan if the heater FET came on 100%? Or whats it at for regular printing speeds.

--- End quote ---
I was too focused on pointing the fan right to pay attention to the duty cycle.

But i've since noticed that the heater is very sensitive to airflow so i might actually go and swap the heater cartridge to be sure.
Changing the settings around did help with stability but it's by no means perfect yet.

Swapped the heater from my old V5 and noticed almost no difference. I guess this is as good as it gets  :-//

silicone sock?


--- Quote from: thm_w on October 13, 2021, 08:12:15 pm ---silicone sock?

--- End quote ---
I'll try to make one, i think it would be fun to do some molding with a 3d printed mold, much like Stephan from CNCkitchen did.
I don't have any two component silicone, but i know a secret to make RTV act like two component silicone and harden in like 30 minutes.  :-+

Also since i ripped my old V5 hotend apart i had a spare thermistor so i glued it to the bottom of my heated bed and enabled heated bed PWM.
And after an autotune the temperature at 50oC is stable within less than +-0.5oC.  :-+


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