I do not own this upgrade but in theory automatic calibration should still be working as this setup still provides a hard surface to probe against.
After installing this upgrade you may want to change the PID values for the heated bed as this 5mm alu plate behaves different than glass.
It's probably also recommended to warm up you build plate 5-10minutes before calibration/printing to minimize errors due to thermal expansion.
I wonder why the plate (255mmx229mm) isn't as big as the Ultimaker heated bed (257mmx229mm).Edited by cjs
I'm wondering this too...
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