Uploaded May 2026 | Updated September 2026, 1 hour ago

---

I disassembled an old DVD-ROM and salvaged its laser. I built a small constant current source using an LM317 regulator and tested the laser. It can burn through my rubber gloves!

Please subscribe, and consider becoming a Member of my channel!
youtube.com/channel/UCKp1MzuAceJnDqAvsZl_46g/join

Parts and tools: https://curiousscientist.tech/tools