The CNC also make machining up some of the more fiddly parts easier. This is the block off plug for the old reverse lockout position. A time consuming job on the manual mill.
It uses the the original style O ring seal
Installed in place.
Machine soft jaws for the mill vice make securely holding an odd shaped piece easy.
Sorry to distract from the original post. I get a bit excited about machining stuff. Back on topic now...