Activated Charcoal Filter Overview: The exhaust gas from the electro-static-filter unit flows to this laser activated charcoal filter unit. The main body of the unit has a drawer where the activated charcoal pellets are kept in two separate chambers. We use 4×6 mm coal based activated charcoal pallets for the best overall absorption of varieties […]
Category Archives: Fume Extraction
DIY Blast Gate for 4″ Dia. Dust Collection
DIY Blast Gate, 4 inch diameter, Laser Cut Edition: We have made available the PDF of our first version of exhaust and dust collection blast gate, lased from 1/4″ MDF and a piece of paper and a bunch of 1″ 6-32 machine screws. It’s made for use with 4″ dia. schedule 1 PVC irrigation pipes. […]
DIY Laser Fume Extractor: [Stage 4] Electro-Static Filter
Overview: The Electro-Static Air Filter charges the incoming fume into one charge and collects the particles onto the subsequent plate with an opposing charge. It reduces the smoky character of the laser exhaust fume down to visibly clear form prior to the Activate Charcoal Filter. The earlier versions of our laser fume scrubber employed HEPA […]
DIY Laser Fume Extractor: [Stage 3] Large Particulate Filter
Overview: This is what we call the stage 3 Large Particulate Filter where the raw laser fume is first mechanically filtered. It employs an easily procurable and economical 16 x 25 x 1″ disposable HVAC filter. We use MERV 13 that can be ordered on Amazon in bulk (or equivalent 3M filters as they do […]
DIY Laser Fume Extractor: [Stage 2] Exhaust Mixer
Overview: The laser engraver has two 4″ dia. ports for its exhaust output; One from the above and the other from the bottom of the lasing table. We thought about designing and attaching a rigid intake unit directly behind the laser machine to control and direct the flow at the lowest resistance but it didn’t […]
DIY Laser Fume Extractor: [Stage 1] Laser Engraver Exhaust
Overview: The laser engraver had two size options, 3 or 4″ dia., for its two exhaust ports. We opted for the larger one to maximize the gas flow. One port is for the fume exiting from the top of the table. The other port connected to the bottom center of the lasing table. This is for […]