Alone in the hackerspace late at night I managed to get the first print out of the Metric Cerberus. It’s a delta with spectra line to drive the carriages and FSRs under the bed for probing. Mostly built by @Mark_Hindess from his metric fork of @Steve_Graber 's design. Its printed parts were done on my trusty old i2.
Mark, M500 command seems to not be working, so I wrote the E steps/mm value on the bed.