this post was submitted on 01 Mar 2024
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Sure, but that doesn't mean there won't ever be some situation where it'll try to Z home for whatever reason, or even if it's just user forgetfulness, and you poke the PEI sheet with a 215+ degree nozzle. The fact that the mechanism inherently includes that possibility is stupid.
The printer won't do any leveling with a fully heated nozzle.
The MK4's we use at work and my personal MK4 all heat up to 170 before bed leveling, and if you previously swapped filaments before leveling, the printer will pause and wait until the nozzle has cooled down to the target range before initiating bed leveling.
Well, then at least they thought of that. Will it Z home with the nozzle preheated? I'll bet you it will.