I solder the lid to the base. I use a 1/8" pin and use a centering jig on my drill press. I can drill part way through on one end then I switch and do the other end. I can't get all the way through at this point so I then clamp it in a vise and run the hole through the rest of the way with a hand drill.
There are probably many other ways to get this done but I ain't smart enough to figger anything else out.