Upgrading a K40 Laser Cutter, Part 2: Power Limiting and Precision Upgrades

Want to increase the life of your K40's laser tube? How about more precise power control? Start here! While the K40 laser cutter (aka an eBay/Alibaba laser cutter) is branded as a 40 watts, it really isn't. For reasons I won't go into in this article, it is closer to a 30W laser in [...]