Carbon Filter Build

Step Three - Airwell/Inner Core

Now that the base is done, start on the core.

Grab the tin snips to cut the appropriate size hardware cloth and window screen.







Wrap cloth and window screen tightly around the 4" endcap, have the 4" duct clamp ready.





Repeat with the base and stitch it together if there's a gap.





Grab the pantyhose and scissors. Cut off a leg and roll it onto the core. It might be helpful to tape off the screen's edge at the endcap to avoid snags before applying the pantyhose.







The core is now finished.

Take a break, smoke a bowl, and get some sleep.

Now that the sun is shining and you're well rested, start on the filter's outer shell.

Step Four - Shell

Cut the appropriate size hardware cloth and window screen.



Wrap the cloth and screen around the base, attach with the 6" duct clamp. Repeat with the 5" end cap.







If it's got a gap, stitch it up. Avoid pinching or catching any part of the screen on itself to minimize stitching.



Pinched.



Tape off the edges at the end cap. If it helps with opening and closing, apply a handle for the end cap.





Apply pantyhose from the reducer end and cut off the toe.

you might wanna screw that reducer on if you didn't, I just looked at a thread where someone's diy carbon filter busted open in the grow and was distributed to the sticky buds by way of air flow. if you aren't buying it bulk then you'll be paying 3-4 dollars a pound for activated carbon. I made my first scrubber but from now on I'm buying manufactured filters.

Amazon had 3LB of carbon for $12 shipped. This filter took 4.5LB, better planning and I would have bought two.

Step Five - Carbon and Mounting

Add the carbon to the filter slowly and evenly. Run to PetCo for more carbon, sell a couple fillings to pay for it.





Fill it far enough to be able to fit in the endcap. If it doesn't fit in there quite right or there's too much carbon rolling around, a simple fix would be to fill the endcap with quilt batting.



Apply the end cap and install.






...that's all folks. A fun and inexpensive project for the olfactory-paranoid DIYer.

Questions and comments are welcome.

looks to be pulling air thru 3/4 inch of carbon at the most, 2 inches would be ideal.

nice build though, the small amount of carbon will just mean you'll be changing it out more.I was lucky, I work in a sheet metal shop and spot welded most all of mine together, it held like 15 pounds of carbon.

Originally Posted by dbkick

you might wanna screw that reducer on if you didn't, I just looked at a thread where someone's diy carbon filter busted open in the grow and was distributed to the sticky buds by way of air flow. if you aren't buying it bulk then you'll be paying 3-4 dollars a pound for activated carbon. I made my first scrubber but from now on I'm buying manufactured filters.

Ouch that sucks and yeah, shit aint cheap.

Originally Posted by dbkick

looks to be pulling air thru 3/4 inch of carbon at the most, 2 inches would be ideal.

Yes, 2" would be best for most situations. Anyone thinking about building one of these should use a 6" reducer instead of a 5".

Thanks for stopping in dbkick.