Summary This is a fume extractor i made one to save my lungs. What you will need is a 140mm fan,9v adapter and to print the two STL-files. BOM: 3D-printer - https://goo.gl/Jnw09F 140mm fan here - https://www.amazon.com/gp/prod... 9V adapter - https://www.banggood.com/AC-10... 9V connector - https://www.banggood.com/Male-... Carbon filter - https://www.banggood.com/10pcs... The first part i used a support. the second part does not need support. Infillrate: above 10% should be fine. Note: if you want more flow, just add one more fan! but if think its good as it is. Please check out and subscribe on my youtube-channel