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Thread: DIY air filtration unit for <$200

  1. #16
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    General Carbon... there are a few useful selections, but I got the 55 lb bag of their C-30. The bag was $96 with $19 ground shipping.
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  2. #17
    Reference the HEPA prior to the charcoal, in my experience, the charcoal actually filters out some solid matter that makes it through the furnace filter pre-filter which presents cleaner air to the HEPA filter. This, I think, greatly extends the life of the HEPA filter, which is the most expensive item in the assembly. Others may have different experiences.

    I actually removed my HEPA filter from my system and started venting back outside to save the cost of the HEPA filter replacement. The main purpose of my scrubber is to remove the smell since I live in a close residential neighborhood. But then again my HEPA filter was 12" x 24" x 12" and ran close to $400.00 each.

    I like Dan's set-up. I built mine out of 1/2" MDF. His is much easier to construct.
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  3. #18
    Your point is a good one. In my previous life we used metal mesh filters ahead of the charcoal to protect the charcoal filter from solid particulates thereby extending the life.

    I have a hepa filter on my vac but don't know if it has odor reducing qualities like charcoal.
    Mike Null

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  4. #19
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    Wacky Weed and Lasers

    Apparently our friends who are into growing ganja, have this filtering all figured out so that people don't smell their growing plants.

    http://www.hydrofarm.com
    http://www.rollitup.org/indoor-growi...on-filter.html

    Search eBAY for "carbon filters" or "Carbon air scrubber"

    There are a lot of DIY projects on the web using ductwork/ aluminum fencing and carbon fernace filters. But I think Dan has a good way.

  5. #20

    source of the charcoal

    Dan what was your source of the charcoal?
    [SIGPIC][/SIGPIC]Honey and Coco
    Steve / Sandy Wallace
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  6. #21
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    Steven,

    See post #16 above...
    Hi-Tec Designs, LLC -- Owner (and self-proclaimed LED guru )

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  7. #22
    Thanks Dan I am afraid I posted my request before I looked through the other prior posts that were added after I first read your post.
    [SIGPIC][/SIGPIC]Honey and Coco
    Steve / Sandy Wallace
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  8. #23
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    Young America, Indiana
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    Ok Dan, I think I'm in love...can't wait to try this. Thanks for sharing. Sandy

  9. #24
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    Any favorites for the activated charcoal filter material suppliers? Thanks, Sandy

  10. #25
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    Just look for the cut-it-yourself filters at Home Depot, Lowes, etc. One filter is blue, the other black, and there's a black plastic mesh and clips with it.
    Hi-Tec Designs, LLC -- Owner (and self-proclaimed LED guru )

    Trotec 80W Speedy 300 laser w/everything
    CAMaster Stinger CNC (25" x 36" x 5")
    USCutter 24" LaserPoint Vinyl Cutter
    Jet JWBS-18QT-3 18", 3HP bandsaw
    Robust Beauty 25"x52" wood lathe w/everything
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    Delta 18-900L 18" drill press

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  11. #26
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    Young America, Indiana
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    Filter system

    Hi Dan, How much charcoal did you use? Is it granular or pellet?
    Thanks, Sandy

  12. #27
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    4mm pellets, if memory serves... the ordering info is in post #16...
    Hi-Tec Designs, LLC -- Owner (and self-proclaimed LED guru )

    Trotec 80W Speedy 300 laser w/everything
    CAMaster Stinger CNC (25" x 36" x 5")
    USCutter 24" LaserPoint Vinyl Cutter
    Jet JWBS-18QT-3 18", 3HP bandsaw
    Robust Beauty 25"x52" wood lathe w/everything
    Jet BD-920W 9"x20" metal lathe
    Delta 18-900L 18" drill press

    Flame Polisher (ooooh, FIRE!)
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  13. #28
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    Dan, I'm not too swift at getting around this forum! Sorry I had missed post #16.
    I've got it now...Thank you very much. Sandy

  14. #29
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    Jan 2007
    Location
    South Surrey, BC Canada
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    Dan I know you tested your scrubber with wood, but have you used it with plastics. I do alot of Rowmark tags and a little acrylic and was wondering how it does with those products?
    I am going to build one just trying to figure out if i need to go larger for plastic? or is it good as is.
    Thanks for sharing a great project.
    Frank
    Epilog Helix 35W, Corel Draw 12

  15. #30
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    If I can't smell wood at all, it means it is really taking the noxious fumes out of the air. Plastic would be no different.
    Hi-Tec Designs, LLC -- Owner (and self-proclaimed LED guru )

    Trotec 80W Speedy 300 laser w/everything
    CAMaster Stinger CNC (25" x 36" x 5")
    USCutter 24" LaserPoint Vinyl Cutter
    Jet JWBS-18QT-3 18", 3HP bandsaw
    Robust Beauty 25"x52" wood lathe w/everything
    Jet BD-920W 9"x20" metal lathe
    Delta 18-900L 18" drill press

    Flame Polisher (ooooh, FIRE!)
    Freeware: InkScape, Paint.NET, DoubleCAD XT
    Paidware: Wacom Intuos4 (Large), CorelDRAW X5

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