The last CNC machine I got to play with was a 12 axis Bosch gantry unit. But, rather than mill with it, I was using it as a glue applicator on a complex part. Oddly enough, managing the glue was the hard part. It was a hot-melt glue with a very narrow temperature range for what we were doing, so keeping it adjusted was a real pain in the shorts. Writing P-code for the CNC portion of the operation wasn't so hard after I wrote the German-English translator. Had a lotta fun, but I don't want to ever do it again.