One gotcha here is that your stock K40 has a 12mm diameter lens and the metal air assist laser head I have linked here uses an 18mm lens. Of course eventually you’ll get tired of this and just want to get a metal one.
The heat from the cutting drifts up and makes a mess of things. I am new at the K40 and am on like my 4th air assists already. This can be as simple as 3D printing one which is what I did however if you get any kind of a flame up during cutting or engraving the end of the air assist nozzle will begin to melt.
Let’s go over a quick list of things you are going to want to upgrade.įirst and foremost the very first thing you are going to want to upgrade is to add an air assist. While they do indeed come at a magnificent price point the old adage applies. Once you use one of these things a bit and learn your way around one you’re going to want to upgrade some things. You can buy larger and more powerful laser tubes. So that kicks off the upgrade discussion. It’s really not enough to kick a fuss up over. A lot of the included laser tubes are actually 30 to 35 watts. Right out of the chute these things engrave and cut well although the 40 in K40 seems to be a bit of a gimmick. It is also were well configured and has many upgrades already included. I got mine from a place called OMTech for about $420. They can be had for around $350 to $450 dollars depending on where you get them and how you get them configured. The Chinese laser often referred to as the K40 (40 watt) is an entry level CO2 laser at a magnificent price point.
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