Submini vacuum tube assembly for octal sockets

This assembly is an adapter for subminiture vacuum tubes/valves so they plug into an octal base; the primary goal is to act as a substitute for the 6SN7 in audio amps. The printed object is the cover that fits over the submini tube and attaches to the octal base. It's purpose is to help prevent damage to the tube, protect your fingers, covers the wires, and to act as a conventient handle to aid removing the tube from recessed sockets.

I consider this to be an intermediate level project. You n