Build a Portable Laminar Flow Hood (Step-by-Step Tutorial)

In this video I show how to build a professional-grade, portable 12×12 laminar flow hood using one of my laser-cut plywood kits. This compact desktop hood produces clean HEPA-filtered laminar airflow for sterile work like mushroom cultivation, agar transfers, culture work, and other lab tasks. The build is designed to be simple and accessible: glue the plywood housing together, connect a few electrical terminals, install the HEPA filter, and you're ready to go. I also demonstrate several optional upgrades including: • Leather carry handle • Acrylic wind guard • Internal lithium-ion battery pack for portable use • PWM fan speed control The battery upgrade allows the hood to operate completely off-grid, making it ideal for small labs, workshops, or field work. This video walks through the entire process step-by-step, including wiring, finishing, and filter installation. Materials & Supplies ================= The Fungaia Flow Hood Kit 👉 https://www.fungaia.life/flowhood The kit includes: - a powerful DC centrifugal blower - a professional-grade HEPA filter - a laser-cut plywood box that makes assembly easy and accurate - electrical components (power jack, power switch, fuse protection) - a DC power supply Optional add-ons: - a leather handle - an acrylic wind guard Other supplies - wood glue - wood filler putty - stain, varnish and/or linseed oil - sandpaper - silicone sealant PWM Signal Generator for speed control: https://amzn.to/4lmD3p4 Battery Pack Supplies List Preferred vendor for lithium-ion batteries: https://liionwholesale.com (Recommended: Molicel 21700 P-42A) 7-series BMS: https://amzn.to/4sxy7Qm (Recommended: DALY brand; 15amp is plenty) Nickel strip: https://liionwholesale.com/collections/nickel-strip-and-nickel-tabs/products/pre-cut-pure-nickel-battery-tabs-0-15mm-0-2mm-thickness-6mm-10mm-widths Battery pack heat shrink: https://amzn.to/4lgcsKe Other Supplies ================= The best mushroom culture vendor: TRUE BLUE GENETICS Discount code: FUNGAIA Fungaia: mushroom cultures, cultivation supplies & more https://www.fungaia.life/ Fertile Substrate: mushroom substrate, grain and more https://www.FertileSubstrate.com/ ================= Created by Paul Lynn. All rights reserved. © 2026 Walla Walla, Washington ================= 0:00 Intro 3:37 Part & Supplies 10:18 Part 1: Assembly 18:52 Part 2: Finish Work 28:30 Handle 29:14 Prefilter 29:31 Wind Guard 31:32 Battery Pack 48:35 Speed Control 50:43 Outro