Creality K1's High Flow Activated Carbon Filter 130mm

3D printing is known to release harmful compounds (VOC - Volatile Organic Compounds) in the air.
Several studies have shown that activated carbon is effective in removing these compounds.

There are several models of activated carbon filters, but I thought they weren't that effective, so I decided to create my own model.
The K1's rear fan is weak, is just 40mm in a axial fan. That fan don't have much static pressure, so, if I put much restriction will be flow affected.
 

So, that model was designed to be very effective, so I put 2 stages in a big filter (130mm). Bigger area = less restriction!
The first stage I used a bunch of pellets of activated carbon, they have great capacity of VOC absortion, but have some space between pellets and some VOCs can pass through.
The second stage I used a Activated Carbon Filter Sponge to fine filtration.

Bill of material

• Activated Carbon Pellets (about 80gr)
• Activated Carbon Sponge (size 130x130mm)

Attention:

Use only acid-free activated carbon pellets.

Acid washed activated carbon cause oxidation on metal parts


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