New DIY 18650

saltytri

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Dec 20, 2008
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After taking a while to learn the basics of machining, I figured that I knew enough to attempt a light from scratch. This wasn't intended to break any new ground either electrically or mechanically but just to put to use the metal working techniques I'd been trying out.

When the body and bezel were roughed out, my wife took a real interest and asked whether she could have the light when it was finished. Any fool knows the value of having the wife approve of hobbies, so I changed my plans and tried for a clean and simple design rather than a more aggressive look. The result is roughly the size of a Surefire 6P but the girth of the body is fatter so it feels pretty good in the hand. To keep the weight down, the wall thickness was reduced by extra boring on the inside except at the ends of the battery where it needs support.

The bright end is powered by a 3 level Dereelight pill in an internally threaded sleeve that fits the standard P60 drop-in profile. Any P60 clone will work fine in the body. I like the beam of the Malkoff drop-ins so I used the same optic, an eight degree Cree. It's now running with an AW 18650 but it can take two CR123s or RCR123s with a reducer tube turned out of PVC. PVC is pretty sketchy at .030" so I may be making a tube out of something else pretty quick!

The switch is the nice unit that NetKidz sells here. It is recessed so the light can tailstand. The diameter of the tailcap is generous so the switch is easily accessible.

Before cutting the final decorative details, the parts were bead blasted, giving a nice contrast with the shiny places.

So, my wife, who is really very supportive in general, may feel better about the new tools that have turned up in the shop!



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SFG2Lman

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Jun 24, 2009
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that, my friend, is a beautiful light! nice work! what metal did you use? and i really like the p60 sleeve idea!
 

richardcpf

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May 23, 2008
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Looks good man.. I like the the size and simplicity of this flashlight.
 

Norm

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After taking a while to learn the basics of machining, I figured that I knew enough to attempt a light from scratch.
Looks like you learnt very well, I'd be very proud if I could make something that looks as good as your light. :wow: :goodjob:
Norm
 

allburger

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Jan 7, 2008
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Mid Michigan
I am interested in seeing you sell some of those sleeves for the pill and optic here on CPF. I know that I would buy a couple. They must be relatively cheap to make.
 

saltytri

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I'm pretty sure that it came from Cutter, down your way. Here's the link:

http://www.cutter.com.au/products.php?cat=Lenses+for+LEDs+Cree+XLAMP&pg=2

Thanks to all you gents for the nice comments!!


These are available from a US supplier:

http://www.ledsupply.com/247-10-lens.php

Beware the knockoffs sold by Kai and DX. These may be useful for some applications but, in my admittedly casual tests with XREs, they don't produce a beam anywhere as good as the genuine units:

http://www.kaidomain.com/ProductDetails.aspx?ProductId=7617
http://www.dealextreme.com/details.dx/sku.1920
 

StefanFS

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Oct 12, 2006
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Silicon Road 1, Sweden
These are available from a US supplier:

http://www.ledsupply.com/247-10-lens.php

Beware the knockoffs sold by Kai and DX. These may be useful for some applications but, in my admittedly casual tests with XREs, they don't produce a beam anywhere as good as the genuine units:

http://www.kaidomain.com/ProductDetails.aspx?ProductId=7617
http://www.dealextreme.com/details.dx/sku.1920

Very fine light there!

About the optics, you linked to a 45 degree optic at KaiD. I've bought these optics from a variety of sources, and I would venture to say that they are all from the same manufacturer. I've bought the 8-10 degree optics from both HK suppliers mentioned here and they were up to spec.

I think your nice sleeve for the optic could be a bestseller. Interesting.
 
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saltytri

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Dec 20, 2008
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I am interested in seeing you sell some of those sleeves for the pill and optic here on CPF. I know that I would buy a couple. They must be relatively cheap to make.

This would probably be a good project for someone with CNC equipment and/or some real production skills. I'm not that person, so I hereby give up all my patent rights to whoever wants to make some of these. :)

This would be a pretty useful part to have in your bag of tricks since the optic is only two bucks at LED Supply. All the P60-type pills that I've measured have the same metric 1.0 thread, though they may be exceptions. So, most any pill could be cannibalized from a drop-in and doing this does't ruin the pill or the reflector so the process can be reversed if desired. For the price of the optic and the sleeve, any drop-in could be turned into a "poor man's Malkoff."
 
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