the cap and filter:
Setting it up on the lathe for the tap guide:
Presto! A cool looking vented gas cap (filter will be threaded in a little farther before installation):
Once the gas tank is set up for its final mounting position, we will drill the position for the gas cap at the very top of the tank. Lee is thinking of adding a small piece of spare exhaust pipe (which is the exact outer diameter of the cap sleeve) to extend the filler cap out of the tank a little.