mag tailcap threads, nonconductive?

[f22shift]

would there be a way to permanently make it so that it doesnt conduct electricity?
i was thinking about the tailcap switches in the 1d thread.
i was thinking wouldn't it be great just to make a mag shorty that has a twist on and off with the tailcap for the maximum in short length.

but eventually the coating on the threads wear out. so would there be a good material that can cover the threads on the tailcap and the body but would withstand constant twist on and off?

 

[spencer]

You mean keep the threads unconductive but keep the outside of the tailcap (where it touches the body) still conductive?

 

[LukeA]

The pressure on the thread faces from the Mag spring will grind through any non-conductive coating I can think of.

 

[f22shift]

for example if i untwist my mag tailcap a little , it breaks the circuit essentially "locking out" the light. this is because the threads have some ano i think.
the normal connection is not through the thread but the end of the barrel to cap end.

so i think eventually the thread will wear out to where you wouldnt be able to lock out as the current goes through the threads.

so using the tailcap as a twisty on/off wouldn't be possible. not in the long term at least.

 

[Benson]

The pressure on the thread faces from the Mag spring will grind through any non-conductive coating I can think of.

+1, eventually. A good hard anodize on both surfaces should last for a while, though, if kept lubed.

The only permanent option I can think of would be to isolate the battery spring and make contact to a step in the bore, or even (for a 26700/C/18650 arrangement) have a separate tube combining the function of battery sleeve and negative conductor, and butt against that when tightened. Of course, contacting on an inside step means leaving a small gap at the outside, which isn't so desirable aesthetically. It shouldn't hurt watertight sealing, though, if you overhaul things right.