The 6th Annual BLF / Old Lumens - Machine Made - Kaybi's Entry

Interesting design, not the first build the EoS has inspired :wink:
Good to see you here :+1:

Welcome to the comp :slight_smile:

Pity there’s only a week left….pity for me that is… I forsee a frantic Sunday coming up :weary: :zipper_mouth_face: :beer:

Good !

That's the kind of torch i was thinking to do myself in memory of my first flashlight ;) where did you find the reflector ?

Remark from someone who use to design "onboard electronic" (not sure about the translation) : Inside a closed box your heatsink is (about) worth only it's thermal mass so you might as well use something with smaller fins

Side note : I don't really get why everyone on this forum refer to eye of skemet each time there is a "flat box" torch. For me it's just how nearly every torch was looking like here when i was a kid many years before EoS (but i totally admit EoS is a very nice and beautiful design itself).

CRX: Thanks a lot!

FmC: Yeah, the time crunch is real. Good luck :slight_smile:

Kame Sennin: The heatsink is actually exposed to the open air. It’s out of focus, but you can see the cutout for it and the heatsink showing on the last picture. The reflector comes from mountain electronics, it’s a catadioptric from carclo, 10158, costs about 9 usd.

Very cool, kaybi! And welcome to the competition!

Hey, I almost missed this one. Very interesting, good luck!

Cool idea having the heatsink exposed (pun???). Great work so far :+1:

Some updates:

This is the internal wiring. You can also see the nuts used to keep the backplate closed and the battery.

The backplate, showing the heatsink, too. The current screws are not the right size, but I should have some new screws in time for the deadline

Secondary emitter, 219b sw45k

And primary emitter, osram flat black.

The perfect compromise for those of us who are both throw addicts and CRI babies :wink:

Very cool! :+1:

Will the driver be connected to the heatsink as well?

I have no plans to connect the driver to the heatsink, but given the fairly low amperage of the light (16650 battery, long leads, generally high resistance…) I don’t expect it to have much trouble. It could probably be connected to the heatsink if it really had to be, though.

Thats really creative kaybi. Good to see it up and running. :beer:

Good concept! Makes me thinking of building a similar light one day …
How did you fix the screw nuts, super glue? And which type of filament did you use?

MRsDNF: Thanks a lot.

Flashy Mike: The nuts are currently fixed with super glue, yeah. The filament is PLA. I’m having some trouble printing ABS right now, which was the filament I wanted to use originally, for extra heat resistance, but I don’t think the light will get hot enough for it to be a problem.

If you want to build a similar light, I’d be happy to send you the files to print iit yourself. I already planned to make them public, but I want to wait until I’m finished entirely with the light just in case I make any more changes to it.

Last few updates before the contest closes for good:

The battery can be changed without having to open the backplate, using the bayonet cap.

The OpenScad files for anyone who wants to print the shell for this flashlight or make their own version of it can be found here. In it’s current state, I can’t recommend printing this unless you really want to tinker around. I probably will continue to improve the design in the future, but for now, this is all the time I have :wink:

Some much needed improvements would include better support for the heatsink, better tolerances in general, a change in the material used to print the host, and, as a long term goal, waterproofing.

That said, in it’s current state, the light works just fine. The heatsink is more than capable of handling the heat produced, the battery is easy to change, the high cri 219b sw45k looks incredible and the osram emitter, while handicapped by the high resistance wiring and (mostly) the shoddy focusing, throws enough for trail-finding.

Nice little pocketable light, well done! :beer:

Hi Kaybi,
would you mind to share where you bought the optics?

I got it from mountain electronics. 10158 Carclo - 60mm Ultra Narrow Catadioptric

Thanks! I knew Richard has them available but hoped for a faster European source.

Congratulations on the quick build! I totally missed this thread somehow. But I just now read through it. I like your design, although I agree that the heat sink could probably use a bit more exposure. A suggestion would be to turn it 90 degrees, so the fins run the width of the box rather than the length. Then cut some vent grooves in the adjacent sides to allow a bit more of a draft. I’m sure you’re ultimately right that it doesn’t need it. But it would still help a little I think.

Wow, I had the same idea too. But you made it faster. Nice light Kaybii. 3D printed casing?

[Clemence]