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Air Assist Nozzle for DC-KIII, K40 Chinese 40 watt Laser Cutter / Engraver

by 2ROBOTGUY, published

Air Assist Nozzle for DC-KIII, K40 Chinese 40 watt Laser Cutter / Engraver by 2ROBOTGUY May 26, 2014
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Summary

Great addition to your 40 watt Chinese laser cutter. I was able to cut my laser power by 25% and increase my cutting speed 40% with this simple part.

Purchase this item : https://www.etsy.com/listing/503625424/air-assist-nozzle-for-dc-kiii-k40

Here is my parts list

1 X Air Assist for 40 Watt Chinese Laser engraver
1 X metal insert 10mm Dia from a Harbor freight kit. ( http://www.harborfreight.com/20-piece-air-compressor-starter-kit-68191.html) You can build this part yourself if you want to
1 X Air brush pump from Harbor freight ( http://www.harborfreight.com/1-5-hp-58-psi-compressor-and-airbrush-kit-95630.html)
1 X ~8mm drill bit to open metal insert

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For some reason the laser isn't going straight down, but instead, making it's own hole off-center. Any idea why that might be? The cone goes all the way to the metal mating surface..

Thanks,

James

Have you run into any issues with the heat of the laser melting the PLA? I made something similar for my 40w laser (based on your design, the one you made doesn't quite fit the one they shipped me) and am running into that.

I'm running into the same thing, could you upload your modified version?

Excellent! I'll give it a go asap.

Definitely.. I made mine for a specific focal length, but if you've got a Chinese 40w it's probably the same. Lemme find it..

Are you in missouri?

Well done.
I have just purchased one of these Chinese laser cutters and will be using your design real soon.
I do have another problem that you might be able to help me with:
What software are you using to output to the laser cutter? Mine is all in Chinese and I cant find anything system

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