Hi all,
I have the Falcon 2, 22w, non-pro version, so no built in fume hood.
I have seen a fume extraction nozzle kit (by Embrace Making) which uses a CPAP hose to connect to a shop vac, this has small ducts which run down the side of the laser module. In principle this is fine but there are a couple of issues, 1) EM wants to sell the physical object, I would rather just print my own (I have 2 Creality printers) 2) I believe the airflow can be improved significantly.
Due to clearance limitations, only the sides of the module are suited to add-ons, each side also has a fan grille, the EM design works the ducts around this, reducing the size of the duct greatly.
My idea is to have a larger oval channel which runs the whole length and width of each side, this would cover the vent grilles however as far as I can tell this shouldn’t cause an issue (unless I am mistaken).
From examining the dust patterns inside the heat sink channel inside the module, it appears the cooling fans draw air in from the ducts next to the laser and expel this air from the fane to the left and right of the module. If this is correct, I propose to have the air from these fans feed into my extraction channel, this would then be extracted with the rest of the fume flow.
I have attached a screenshot with a basic overview of the concept.
The system would still use a flexi hose but instead of a shop vac I intend to use a 150mm axial fan, this is already pulling fumes from my DIY enclosure (which I am decommissioning) and a small spray cabinet I use for airbrushing.
I’d appreciate clarification of my understanding, I’d also appreciate any suggestions to improve the design.
Many thanks,
Craig.
