design-1 Published October 19, 2017 at 1897 × 388 in DIY Laser Fume Extractor: Pre-Version 8.2 Units ← Previous / Next → First design for laser fume extractor First design for laser fume extractor. This design just uses an inline fan to pull the fumes through the duct to the pot grower style activated charcoal can directly outside (** CO Hazard )