"artifacts" on first layer

[partferret]

There’s another thread

What to do about the H2D heated bed temperature uniformity problem?

Taken in isolation, without any way to know critical thresholds, I would argue that neither is useful. If someone worked out the critical thresholds through experimentation, I’d probably go with the Kelvin number, if only because no thinking required. With the other approach, it might be fine, but I’d have to think harder to be sure. So, based on expediency and conservation of brainpower, I’d go Kelvin. That’s not a proof that Celsius would be wrong though. If you like puzzles, and have not…

You could try upping the bed temp 5-10C and see if it’s still there. It might be a cold spot that’s just not sticking as well and getting ‘pulled’ during laydown. Random (but likely since it happens irrespective of the plate) guess on things to try.