![K40 upgrades: Lid interlock switch Air assist pump Fume extractor Coolant flow interlock. - Lasers - Maker Forums K40 upgrades: Lid interlock switch Air assist pump Fume extractor Coolant flow interlock. - Lasers - Maker Forums](https://forum.makerforums.info/uploads/default/original/3X/8/d/8de8822bc11aba9b3f7f74351c02f78934d89ac3.jpeg)
K40 upgrades: Lid interlock switch Air assist pump Fume extractor Coolant flow interlock. - Lasers - Maker Forums
![Leye Cloudray 12/18mm FL50.8 & 16mm FL25.4 CO2 Laser Head with Air Assist for K40 Laser Engraver Cutter - Walmart.com Leye Cloudray 12/18mm FL50.8 & 16mm FL25.4 CO2 Laser Head with Air Assist for K40 Laser Engraver Cutter - Walmart.com](https://i5.walmartimages.com/asr/f56a0d4a-4578-4717-a557-f0b88f2a4c38.76379605022de79534332b8410566983.jpeg?odnHeight=768&odnWidth=768&odnBg=FFFFFF)
Leye Cloudray 12/18mm FL50.8 & 16mm FL25.4 CO2 Laser Head with Air Assist for K40 Laser Engraver Cutter - Walmart.com
![Air Assist / Smoke Assist / Air Nozzle for K40 Lasercutter by mathiaspl20 | Download free STL model | Printables.com Air Assist / Smoke Assist / Air Nozzle for K40 Lasercutter by mathiaspl20 | Download free STL model | Printables.com](https://media.printables.com/media/prints/49724/images/493727_9b352504-fe6f-45fe-87d9-e45c06f5fadd/large_display_photo_2020-06-14_21-20-10_49724.jpg)
Air Assist / Smoke Assist / Air Nozzle for K40 Lasercutter by mathiaspl20 | Download free STL model | Printables.com
![3D Printable Air Assist Nozzle for DC-KIII, K40 Chinese 40 watt Laser Cutter / Engraver by Mark Fuller 3D Printable Air Assist Nozzle for DC-KIII, K40 Chinese 40 watt Laser Cutter / Engraver by Mark Fuller](https://cdn.myminifactory.com/assets/object-assets/58e22f86146e7/images/720X720-img-20140526-095558-preview-featured.jpg)
3D Printable Air Assist Nozzle for DC-KIII, K40 Chinese 40 watt Laser Cutter / Engraver by Mark Fuller
![Amazon.com: k40 Laser Head with Air Assisted Connector 12mm/16mm/18mm for K40 Laser Engraving air Engraver Machine Amazon.com: k40 Laser Head with Air Assisted Connector 12mm/16mm/18mm for K40 Laser Engraving air Engraver Machine](https://m.media-amazon.com/images/I/51KFQbtZ9nL._AC_UF894,1000_QL80_.jpg)