High thermal mass bed and autotune complains about it
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I have a very large, ~20lb 1600watt custom heated bed that autotune doesn't play nice with. First, it would stop the process because the temp wouldn't rise fast enough and it assumed there was a fault. I found the "dead time" variable and increased it to 90 seconds and then it was fine.
That is, until it get to temp and started cooling. Now it errors out saying it's not cooling fast enough. Yeah, it takes a while. How do I get it to be more patient?
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After heating it to e.g. 100C and turning it off, how long does it take to fall 2/3 of the way back to room temperature?
