Thanks all for feedback - sorry if I was not clear.

@alankilian Exactly! Stripping down a Delta and a CoreXY.
Putting the Z bed motor on a separate port and operating it by gcode will work - then do some magic at each layer advance.

Deltas do have good speed, and are pretty precise if arms are operating aroud 45 degrees.

Anyhow, curious if the firmware might already have logic to handle the extra axis

Hello all,

This use-case might seem a bit unusual, and then suddenly I need it.

Does the firmware support it?

A workaround could be running the bed on an additional axis. Make it drop down, the reposition print head on layer shift

xstride