Flashlight body for LED/reflector drop-in module

thingiverse

Update: for a brighter version using only a 1.6mm /14awg wire, see https://www.thingiverse.com/thing:2647700. I had a spare 26.5mm LED bulb, so I made a handle for it. You can easily buy this for $12 CAD or about $9 USD but why spend money when you can make one out of scraps? It's incredibly bright - about 1000lm, as bright as a 100W incandescent bulb, but unfortunately gets extremely hot after just five minutes (hence the semi-open air cooling design). Non-printed Materials: 1 protected 18650 cell 1 LED flashlight "drop-in", 26.5mm version - these used to be $3 each but have since gotten more expensive. You can buy them now from aliexpress, ultrafire.com, dealsextreme, etc etc. Get the ones with a reflector and a driver board already built in. 1 clear plastic circle 26.5mm - you can cut this out of anything, I used a dremel on a demo lens (ask for these at your local optometrist or optical store, they just throw them out) 1 SPST latching switch from junk giveaway flashlights (seen in the photo above) 2pc copper (or other metal) strips at least 70mm long Assembly Tips: It's pretty straightforward, but the back cap is a bit tricky because you have to ensure you get good electrical contact.