Вроде фотки пропали.
Вкратце:
Делаешь пропил в изоляторе и сверлишь дырку на гантеле, повыше.
Жидккость проходит рядом с центальным пином и попадет в бак.
спойлер
I did not puncture the central screw, without a lathe it would have been an arduous task, I instead made a partial cut on the insulator of the screw with the dreemel, a cutter is also fine and a turret is drilled at the base, helping me first with the dreemel and then with the drill, if you want more liquid autonomy, the hole can be made higher.