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Universal Air Assist Nozzle for Laser Cutting by Acclaim Crafts

Creation quality: 4.0/5 (1 vote)
Evaluation of members on the printability, utility, level of detail, etc.


Licence CC BY-SA
Last update 2021-04-11 at 00:25
Publication date 2019-08-08 at 22:02
Design number 67974
3D design format
STL Folder details Close
  • Bracket - Horiz - Acclaim Crafts Air Assist Nozzle.stl
  • Bracket - Square - Acclaim Crafts Air Assist Nozzle.stl
  • Bracket - Vert - Acclaim Crafts Air Assist Nozzle.stl
  • Elbow - 90 - Acclaim Crafts Air Assist Nozzle.stl
  • Nozzle - Focused Air - Acclaim Crafts Air Assist Nozzle.stl
  • Nozzle - Holes - Acclaim Crafts Air Assist Nozzle.stl
  • Nozzle - Left Mount with Shield Flange - Acclaim Crafts Air Assist Nozzle.stl
  • Nozzle - Right Mount with Shield Flange - Acclaim Crafts Air Assist Nozzle.stl
  • Nozzle - Slots - Acclaim Crafts Air Assist Nozzle.stl

Learn more about the formats

3D printer file info

3D model description

I got tired of uneven through-cuts with my diode lasers, so set out to fix it. This Air Assist Nozzle combines with 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 to increase its cutting efficiency. Because of its diminutive size and modular design, I imagine you could get it to fit whatever you're driving.

There are three mounting brackets from which to choose, depending on your setup. Also, there are three nozzle types: one with small holes converging the air at .5" beneath the nozzle, one with holes shooting the air straight down, and one with slots blowing down. I'm using a 950 GPH (60L/min) aquarium air pump, and the one with focused air seems to work best. (See updates, below.)

If you're interested, you can learn more about the device and its evolution, get tips on installation, and view loads of pictures by visiting

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 guess 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 and whether or not it works for you.

Thanks a million, and happy cutting!

UPDATES (newest first):

*** 20220918 *** Added a short YouTube video to my personal page:

*** 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 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.)

3D printing settings

At a .2mm layer height, 40% infill, and no supports, it takes about an hour.


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