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I'm putting together a 405 SO6J with 2 16340 Li Ions supplying the power and a blitzbuck v3.1 regulating the current to 445mA, but there's a problem. I put everything in my host except for the diode, leaving the leads hanging out the front so I could set the current. When I clicked the switch...

I wanted to give my herbs (real herbs...for eating) an early start this spring without paying a ton for a commercial grow light, so I built one. On a sheet of aluminum (9x12x.125" or 22.5x30x.3cm) I glued 23 three-watt LEDs with thermal epoxy. The LEDs' wavelengths were chosen to...

After two months of waiting, I finally recieved the host I ordered for my 445 build. Here it is. There's just one problem: I can't get the bezel/head off to get the the pill and such. I've tried brut force (two strap wrenches to try to twist it) and it's currently soaking in acetone in case...

I stumbled upon this old laser safety video and thought it was worth sharing. Lasers were in their infancy but they had long-developed safety protocalls, and LSD inspired music. The Link

I have this suspicion that for most laser eyewear, the profit margins are huge. I also have a theory about why retailers can get away with it. I'm a chemist and have tossed dozens of polycarbonate glasses over the years becuase they cost about a dollar each. Having worked at an optometrist's...

Is there a resource for matching a dvd-rw diode to the burner from which it came? I'm building my first burning laser, including the driver. As a chemist, I dont really know what I'm doing so Ill probably fail but at least I'll learn something. And once that happens, a way to match the pre...