The 15W laser that I added on to my CNC kit abruptly stopped working mid job. Can anyone recommend how to troubleshoot the laser and its signal? Or are these disposable? I've been using it for engraving my logo onto some products, and over the course of use (6 months) the power did seem to get weaker and weaker and I started running the jobs slower and slower, and it would now only engrave on darker surfaces. Now the laser does not engrave at all, and the small focal dot has disappeared. Thanks for any tips/recommendations. Does anyone know the approximate lifespan one will get from these lasers?

Hi guys- Just wondering if anyone can recommend feeds and speeds for some of the typical bits for cutting various types of wood (soft ply, structural ply, and hardwoods). I'm running the 1.5kW Spindle with a screw drive machine. The bits I'm using are: 6mm 2 Flute Straight Cut Bit 6mm 2 Flute Compression 3.175mm 2 Flute Straight Bit Also interested in Upcut and Downcut bits.