We join host Hoocho who explains Laminar and How to Build a DIY Laminar Flow Hood Check out my first channel: https://www.youtube.com/@Hoocho Patreon: https://patreon.com/Hoocho There is a way of scientifically figuring out fan requirements: https://www.orchideenvermehrung.at/english/lfh/choosing.htm The Filter: K&N 20x24x1 HVAC Furnace Air Filter, Merv 11, HVC-12024 https://amzn.to/3Jwbisy The Prefilter: https://www.bunnings.com.au/powerfit-h13-hepa-cartridge-filter_p6210793 For a filter the size I used (plus prefilter) 710 CFM did the trick The Fan: DUCTURBO 8 Inch Inline Duct Fans, 710 CFM With Variable Speed Controller (Aus): https://amzn.to/3JtJC7F Similar output fans (US) I have no experience with these... But they have same CFM output: https://amzn.to/3Xm5aIQ https://amzn.to/3PpLBNR Slightly lower output fans (US) I have no experience with these... But they have just below the CFM output: https://amzn.to/3JpWbkj 1200x1200 Ply Basic Box Cut Sizes: 3 sheets 600x600 1 sheet 600x581 (19mm Ply, or subtract the thickness of ply from the height) 160mm (160 for slanted due to fan width) or 200mm (200 for vertical filter install) x 600 for the back space. And then depending on your filter size and angle of filter you'll need another spacing piece. 200mm Hole in top for fan will require jigsaw. Videos Used for Visuals: Air flow visualization - lamsys https://www.youtube.com/watch?v=XRXZ8BZ1rDE Horizontal Laminar Flow Hood Smoke Test - Terra Universal https://www.youtube.com/watch?v=hKIlpwV_uI8 Laminar Flow, Turbulent Flow and Reynolds Number (Lesson 3, Part 2) -Fluids Explained https://www.youtube.com/watch?v=vhDaCZZ0Sc4 Hanging out in the flow hood! Doing cultures, agar and more - Practical Mycology https://www.youtube.com/watch?v=44MffMdEBKY KO Optical Lens Assembly - Knight Optical https://www.youtube.com/watch?v=pR_nprlF0yw Laminar Flow Waterfall - Jesper Öqvist https://www.youtube.com/watch?v=CHmBVuqb_s0 Welcome to "All the Gear. No Idea" Where inexperience meets enthusiasm. On this channel we explore hobbies and pastimes for the first time, looking to expand our skills and experience by seeking out new and exciting pursuits. Conquering our inexperience with pure enthusiasm and perhaps even discovering our ikigai along the way.