Sometimes you get what you wish for. Here is a close up of the switch:
The atty removed and a peek down the barrel:
Disassembled showing the battery contact and the spot where the downtube/leg meets the larger brass tube:
From another angle, the brass tube is more visible, and a small stripe of spalting in the wood:
Getting all the brass parts to contact is a bit tricky with this design. Luckily, when adding the grooves for the legs, The wall was broken through where the atty tube hole was drilled. On the one side fully, on the other it is paper thin, some tension on the legs and the conductivity is quite good.