Essential elements of an enclosure are filter assembly box and light. It is best to place the control box on the outside of the enclosure due to its propensity for overheating. An automatic fire stop device is useful if one tends to leave their printer unattended for long periods of time.
- Introduction, Filter Assembly Box, Filters
- Enclosure Material Options
- Alternative Filter Assemblies/Ventilation Unit
- Various DIY Enclosures
- My Enclosure
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.
Dimensions 120mm x 120mm (4.72″)
Zortrax HEPA & Carbon Filters “Includes 3 HEPA filters and 3 carbon filters.” Package Dimensions 5.1 x 5 x 3.4 inches
(Does not ship to U.S.) Nilfisk advance small appliance vacuum cleaner parts.
$45.00 & FREE Shipping
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; technical data; Complete Guide to Activated Carbon; Carbon Depth Chart.