Beautiful work, TL! I really like that. If that is a plain design I can't wait to see what you consider fancy. ;)
I'd be in for one each of 18650 and 26650 if you decide to make them for sale. I've tried my hand at assembling them from PVC parts and they end up god-awful huge and ugly. I have some nice anodized aluminum pill bottles that fit unprotected 18650 cells but nothing longer or wider. Something to pack a spare 26650 or 70mm long 18650 would be nice to have.
I didn’t mean to send you back to the drawing board.
Battery porn. Now you’re talking see through.
Cool, nice work.
Never knew Delrin was skin colored. 
Um ...
Never saw natural before, it’s kinda fleshy looking. Lol
OK... Now you've done it! You embarrased the battery holder... it is a blushed pink now. GEEEZE! I may never get it calmed down! 
Dan.
:bigsmile:
Make any for a 10440? Possibly in machinable polycarbonate? Hey, it’s clear!
Black, flesh colored, white, I don’t care, a nicely turned tube for 10440 that’d fit on my keychain would be fantastic!
OTOH, all these things I’m having to have made I might be able to afford a small lathe and learn how to do some things myself, lol. This stuff is addictive!
You mean like this?
Jason from Dark Sucks has these clear 18650 holders for sale:
http://www.darksucks.com/store%20batt%20tubeT.html
TL, nicely done. I can relate to plastic swarf and the problems you get while trying to make something out of it.
I don’t like the idea of a metal battery carrier as I’ll be carrying a Li-ion cell. On the side of safety, a plastic or nylon tube would be more apt to vent by expansion than a metal tube…imo.
The clear tubes with slip-on caps are to bulky and not protective enough of the cell.
I like how a machined polymer, nylon, delrin, polycarbonate tube can be made keychain carry and are tough enough to protect the cell but at the same time not quite strong enough to produce the “bomb” a metal tube might.
Those are beautiful.
For years I have been using the waterproof match container that can be found in WalMart. Here is what I mean.
http://www.campmor.com/plastic-waterproof-match-box.shtml
I have been using them for two cr 123s but an 18650 fits also. And pretty cheap. Like me.
ADDED: I just bought two of those at WalMart for $1.00 each. You can wrap any battery that will fit in plastic material so that they fit and are insulated.
Jerry
Whatever can be made of brass can more easily be made of plastic. For a brass carrier intended to be used for a lithium based battery a vent would be drilled and taped over to allow an escape route for the gasses and to have some sort of semblance of waterproof-ness. It’s not a perfect system, but, it’s better than carrying a loose 10440 in your pocket.
How feasible would it be to put a spring loaded ball detent into a case to act like a valve? Water couldn’t ingress as the ball cuts off passage, but in a vent situation the ball would press against the spring and the tube would “breathe”. Just a thought.
The styling on that intrigues me. The top indicates a battery with a post to it, while the bottom has a definate cartridge rim style to it. Is there a reason for that? Would look pretty cool with that cartridge rim base to have the top machined like a bullet to keep the overall cartridge theme going.
Ha! Yep! Had that planned.... Not really, I had to go look at the image!!! 
I hadn't noticed that. Once the precision work is done, I just play on the outside. Wouldn't be a lot more trouble to make it like a bullet. I might have to try it.
Thanks. Dan.
Just in case you need some dimensions to go by, this’ll hold a 10440. Just let me know where to send the PayPal 
(might have to fudge it a little, not exactly sure as I’m not a machinist) Dimensions for a 500 S&W Magnum cartridge.
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