Quick Question:
If my OCD just can’t stand it anymore and I have to straighten the “T”on my button, how is the retaining ring secured.
Is it a press fit or is it threaded or….?
Thanks in advance
It is threaded. But your OCD will hate it to scratch the ano on that retaining ring, which is very easily done. So the fix starts with filing to shape a plexiglass device that fits the notches in the retaining ring, or print it.
(now you want links, hold on….)
This is how to train your OCD to behave.
1) buy a leaning tower of Pisa print
2) Have someone else hang it for you
3) don’t straighten it, because if you do, it will need straightening.
4) I said DON’T, refer to 3
Thanks djozz. I’ll have to think about whether I want to attempt it. You’re right scratches would be worse.
Thanks for the links. Cool looking little wrenches.
Zulu—Yeah, I probably couldn’t have that hanging in my house. :confounded:
In addition to my hand made jig, I'm now using a 3D printed version that fits all 4 notches - works really well.
You meant NarsilM not Narsil.
A lot of people get these confused.
Holster from China took about 9 days.
Anyone selling the 3D version yet?
Sigh. I feel so behind-the-times.
Nice ! Please let me know (and everyone) where did you get this?
Thanks Tom E for post 16362
Obviously I was discussing electrical solutions, and I never said the diode on the mcu eats LED voltage. A diode on each battery would. The mechanical solution sounds good.
There’s a no-cost way that everyone can do to avoid shorting out the cells that way. I know it’s a tough one, but at the no cost price point it should be something literally everyone can do.
Pay attention when inserting cells.
It’s THE easiest way to ensure your light keeps working, time after time…. 
(Yes, I know, it should go without saying. Apparently it needs to be said louder and more often.) Lights like these are not toys, the danger is real. What if, and I’ve seen it before so I say this in truth, what if the spring welded itself to the cell in that sudden burst of extreme current, instead of dropping the cell out of contact? Milliseconds come into play, things get ugly really fast when the incident takes a slightly different turn…
Put some tape on the positive battery end so that you can more easily tell which end is which.
I have used a red Sharpie marker to make a red ring around the + end of all my 30Q’s, both flat tops and button tops. I used red tape on some at first but one light had a clearance problem with the extra thickness. So I went to the marker.
On a lot of my electrical parts, I painted red on the positive ends. For example, part of a 4-wire power measurement device:
Hm. Anybody make glow-in-the-dark shrinkwrap for cells?
I’m not sure that would make sense. When the cells need to be changed, the light source required to charge the GitD material wouldn’t be functional. So they probably wouldn’t ever glow when glowing would be useful.
The GID tapes I have used for assorted things do not glow unless they have been exposed to light for severalhours before it gets dark. Pretty dark inside a battery tube….
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While I agree and do promote personal responsibility in life in general, there are things that can be done to help peiple out when thoughtlessness prevails. That is not necessarily a bad thing. One example that comes to mind is the red cap that now covers the + terminal on every auto I can remember since the 90’s, maybe longer. That red cap does help prevent some accidental contact with metallic items that might otherwise produce sparks at the very least. I survived the previous decades when auto batteries did not come with those covers. The covers just remove a little bit of danger. So an insulative ring on the Q8 driver could be beneficial. Unfortunately some button top 18650’s don’t have much of a button as was illustrated in another recent thread. Nothing is perfect or 100% safe.