DIY 3D Printer Enclosure Guide
Filter Assembly Box
As 3D printers emit both VOCs and EFPs (see previous post), two types of filters are needed; HEPA and Carbon. The two filters and a fan comprise a filter assembly box. The assembly can be made to exhaust or recirculate air.
Per Louisana’s Energy Curriculum Guide – “The recommended minimum filter surface area is 2.50 cubic feet per minute (cfm) per square inch of filter area” for heating ventilation air conditioning (HVAC) systems. My 24″ x 24″ enclosure is 8 cubic feet. Using a calculator for fan air exchange, 9 cfm are required for a fan. I estimated I needed a 4″ x 4 ” filter.
Filters
True HEPA Replacement
“True HEPA filtration removes up to 99. 97% of airborne particles as small as 0. 3 microns in size including smoke, dust, pollen, pet hair and dander, mold spores and dust mites.
Natural bamboo charcoal reduces harmful volatile organic compounds (VOCs) and household odors from cooking, cleaning, smoking and pets.”
5 x 5 inches
$17.99
Nilfisk HEPA Filter
Nilfisk advance small appliance vacuum cleaner parts.
100 mm L x 100 mm W x 36 mm H
€ 19.94
HEPA 13 Filter
“Avg efficiency for 0.4μm particles: 80<Em<90%
Manufactured under EN 779:2012 as F7″
6 x 6 x 1 inches
$20.00
Zortrax Cover Filter set
Set contains 3 HEPA Filters and 3 Carbon Filters. 3 3/4″ x 3 3/4″ (95.25mm).
$39.00
Carbon Filter Bed
Model design by Sandra James. The design can be adjusted in Tinkercard.
More information about filters: HEPA Filters and ULPA Filters Information- Engineering 360; Hepa Filters; How Long Do HEPA Filters Last?; Flow Rate, Velocity, Pressure Drop Chart; Complete Guide to Activated Carbon; Carbon Depth Chart.
Pages: 1 Introduction 2 Filter Assembly Box 3 Fans 4 Smoke Alarm/Power Stop/Automatic Fire Extinguishers 5 Temperature Controllers 6 Heaters 7 Enclosure Material Options 8 Alternative Filter Assemblies/Ventilation Unit 9 Motherboard Fan Modifications for Bambu Lab A1 10 Various DIY Enclosures 11 My Enclosure
