Universal Air Assist Nozzle for Laser Cutters by Acclaim Crafts

thingiverse

I got fed up with uneven cuts from my diode lasers and set out to fix them. This Air Assist Nozzle combines a small diameter pipe (6-ish mm), some sort of air compressor or pump, and hosing to deliver high velocity air to a laser's focal point, increasing its cutting efficiency greatly. Because of its compact size and modular design, I imagine it can fit whatever setup you're using. There are three mounting brackets to choose from, depending on your specific needs. Also, there are three nozzle types: one with small holes that converge the air at .5" beneath the nozzle, one with holes shooting the air straight down, and one with slots blowing down. I'm currently using a 950 GPH (60L/min) aquarium air pump to push the one with holes, and it works amazingly well! The slotted version will likely require a bit more power to be as effective. If you're interested, you can learn more about this device and its evolution, get tips on installation, and view loads of pictures by visiting the relevant blog entry under John's Workshop at our website: https://www.AcclaimCrafts.com I used both Cura's (v4.2.1) and Simplify3D's (v4.1.2) default settings for the most part, with a .2 mm layer height and an arbitrary 40% infill, but I don't think anything is mandatory. You'll just want enough material so it won't collapse or explode. I'd love to hear what you think of this thing, especially if you try the slotted version, and whether or not it works for you. You can either write to me here or find me in the Endurance Lasers Facebook group. Thanks a million, and happy cutting! UPDATES (newest first): *** 20200520 *** I just uploaded a .step file for those who need it. If it reveals my FreeCAD ineptitude, kindly ignore it. *** 20190824 *** I redesigned the nozzle by adding a 1/8" high by 3/4" diameter flange to the bottom, onto which we can attach any size laser shield we desire. To avoid the need for supports, there are two versions with the hole for the setscrew on opposing sides. (The one shown in the pic is for the down-pipe mounted to the left of the laser.) Get the one that makes the most sense for where your laser is mounted. Also, flip and slice the sucker with the air holes facing up. *** 20190809 *** I'd like to thank Mouss Arena (@Mouss32) for getting me to revisit an idea that I had abandoned. Of the three nozzles in this set, the Focused Air one (marked with an F) seems to clear the kerf best. Also, there is significantly less charring on the top with it, making for a much sharper looking cut. Thanks, Mouss! (The focal point for the air is .5" under the nozzle.)