Welcome @Eureka !
At the top of every page, you’ll see a link: K40 Intro. It links to a set of articles in the Getting Started with CO2 Lasers category that are intended together to give you the key knowledge you need to operate your laser safely and economically.
A few highlights:
- Safety: don’t operate the laser with the cover up. It is strongly recommended to add interlocks if your K40 didn’t come so equipped, so that the laser won’t fire with the cover up. Don’t ever operate the laser unattended, not even for 30 seconds. Have a CO2 fire extinguisher handy. Read What can I cut with a laser cutter/engraver? so you know what materials can release toxic fumes if you try to cut them.
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Cooling: If you don’t cool the tube right, it will die quickly. You can use the
icon at the top of the page to search for tem01to see examples of how it is likely to die. We have an entire article on Cooling the K40 laser tube that has more information than you probably want, but tells you how to spend either time or money to avoid cooking that brand new tube.