I created this cover to protect the amplifier tubes on an MC240 which was missing the original cover. Reproduction or original replacements were more than I wanted to pay after restoring the electrical components of the amp. The two locator stubs register onto where the original would clip for a fairly secure fit.
I printed using Prusament PETG-CF on a Prusa XL 5t, no supports are needed.
I had to lower flow rate the first few layers to avoid over-extrusion that left blobs and caused layer shifting, YMMV.
The author marked this model as their own original creation.