My niece is an artillery officer. I had previously 3D printed a 75mm shell pencil holder. So apparently all the NCOs wanted one. Well how do you top a 75mm shell? Well a 155mm shell. So there is a guy on thingiverse who posted some models of various artillery rounds, but the 155mm model he posted is waaaay bigger than any printer I have access to. Yes in halves it does fit on the gMax. I asked him if he’d be willing to cut his model into 4 sections, so it would fit on a prusa, but he wasn’t (in fairness, he sells premade ones). So off to fusion 360, and made it (the good news is the 155mm shell is essentially unchanged since WWII, so lots of military procurement docs online to get the specs from… I printed the shell sections on the prusa (took 8 days total). Then the fuse on my form 3 as the inlay writing and adjustment screw are intricate. A lot of airbrush and brush time later, it’s ready for the stencil, which I cut onto laser safe stencil sheets on the Glowforge, and sprayed the letters using removable adhesive to attach it. Getting the fuse accurate was a pain.
(Hey, I was tired… hadn’t slept for almost 30 hours trying to get through a dozen scheduled, late, rescheduled flights, missed connections & then finally giving up on the airlines in DC and driving back to CT in the wee hours. Is it just me or has flying gotten more unreliable over the past 20 years?)