Clean Room Inlet Fan/Filter

by LucidOne, published

Clean Room Inlet Fan/Filter by LucidOne Feb 13, 2010

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This is Thing-a-Week #5, previous things can be found here. http://www.iheartrobotics.com/search/label/thing-a-week

Currently this is untested and experimental due to the holiday weekend and since it is still printing.

These parts are used to build a positive pressure glove box style clean room.
The goal is to produce somewhere around a Class 10,000 cleanroom environment in a small space that is useful for taking things like hard drives, cameras and lasers apart.

The current design uses a shopvac air filter part #VF3500, but part #VF6000 is probably preferred.

Based on initial estimates the RadioShack Cooling Fan part #273-0241 should provide reasonable performance when matched with the air filter, however testing has not yet been completed.

Connecting rods are cut from 6061-T6 Round Aluminum tubing, and tapped M4.
OD 0.25" Wall Thickness 0.065"

The open endcap connects to the fan using M3 countersunk screws and nuts.

The design may require caulk or gaskets to function properly.


Print and assemble according to the exploded view diagram.
Cut and tap connecting rods to length. Use a file to trim the length of the rods to ensure a tight fit.


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Have you verified or looked into if any of the higher efficiency shop vac filters have 3rd party filter efficiency certification? Basically, what allows a filter to be used with a certified abatement vacuum or something like that? I am not sure what the average pass or fail rates are for some of the premium shop vac filters but it might be good to know if the performance mattered. I would think if they make a compatible vacuum that is certified the certified filters are going to be available for sure.

Dude this is brilliant! If you use HEPA filters with this, it could be used to make a biology-grade sterile laminar flow hood!

Well documented. I love how both common and specialist items have their space in the Thingiverse. You certainly can't find these in the convenience store at the corner!