
Made from heated and formed pvc tubing, a harbor freight flashlight that I cut about an inch off of....recessed the 510 connection so the vivi nova, and anything about that size, fits into the mod to lessen the height (my tanks fit just fine). Altered the original button (per a post here) making a normal flashlight switch into a momentary, normally open switch).
I had everything except the 510 connection laying around. I had 3 of the 18350s laying around collecting dust...needed to do something with them!