Guumbo's Flashlight Thoughts

This project came about after my S11 Active Cooling Project. The S11 and associated heat sinks seemed a bit bulky so I looked for smaller heat sinks which would fit something like a Sofirn IF23 or a Convoy S21B LHP531. Then I found searching for 1/16 or 1/18 scale 380 sized engine heat sinks found the perfect size. On amazon it was the  32000RPM HighSpeed RC Motor Cooling Fan Heat Sink with Aluminum Alloy This had a perfect 25mm inner diameter on the heat sink. With the s21B being 27.2mm the heat sink snapped on perfectly only stretching a mere 2.2mm to get a nice tight grip. I thought it needed thermal tape anyhow so I added it as well. AI AIKENUO Thermal Tape The adding the following to power the fan: 501646 3.7V Lipo Battery 350mAh 501646 Rechargeable Lithium Polymer Battery Pack Sold by  Qimo via Amazon I wired 2 of these up to individual charging boards Mini USB Type C 3.7V Lithium Battery Charger Board sold by XIITIA on Amazon Connected a BokWin switch between the fan a...

Of course I do. When flashlight manufacturers package and send out a flashlight they often don't spend the time to clean up the threads on the inside and lube them properly. So I started smoothing them off and lubing them up. This makes the reassembly process so much more enjoyable to screw it together smoothly. Without the grabbing you feel from a rough set of threads. My process for a new light.... Remove head and tail from battery tube.  Remove O-ring from threads Check for rough spots on inside and outside threads Sand with green scrubby to smooth out.  Wipe with paper towel, use Q-tip if tight spot, interdental brush if even tighter Grease threads, O-ring divot at end of threads and O-ring with Q-tip with Super Lube Put O-ring back on, ensure outside of O-ring is still lubed Screw on cap or tail and enjoy the smooth action Double check the switch still works If excess lube, wipe off with a paper towel In the kit above I keep the following.... Bass Pro Shop Dry Box Equipme...