Openbar DIY Flowhood.

Discussion in 'DIY' started by Openbar, Feb 20, 2019.

  1. Openbar

    Openbar Member

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    This is more a quick rundown of my flowhood that I made almost two years ago.
    Very Basic and efficient design. Minimal and cheap produces. well, everything but the True 99.8 Hepa filter.
    that was around $225 with shipping. I could be wrong. I got my filter before I built in and that took many months
    [​IMG]
    Front View(Above) Side View (below)
    [​IMG]
    The Box is made out of 1/2 Plywood. white with latex paint. Put cheap handle I had to move it around. I chalked every seem on inside and around where fan hole cut out it. Put that cheap leftover filter thing I found to help inlet air one side of the fan. A light that I had hanging around. Low budget for sure.
    I got theUsed Furnace Fan for $30 off CL.
    I did need to get a capacitor for the fan. that cost like 10-15 bucks if I remember. plus I add the fan light switch to adjust fan speed when in use. I had to be around 60 buck total to get the fan part up and running how i wanted it to.
    here pics of those add ons.
    [​IMG]
    [​IMG]
    Here is the motor spec if any questions on that
    [​IMG]
    I have it wired as constant High but with the adjustable fan switch, I can change the speed quick and easy.

    Yes, it does have a per filter! before I forget to really explain the little bungee cords are there to hold the Hepa filter on the prefilter tight. i have a sill about 1/2" inside that has weatherstripping. then I placed a prefilter then the HEPA is against that and the bungee cords hold everything tight. I have little screws on the back of the box that other bungee hooks to. here is a pic that shows it best I could without totally taking things apart.
    [​IMG]

    Hope this helps someone,
    thinking of how they can make there own flowhood.
    if you are kinda handy.



     
    Last edited: Mar 15, 2019
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  2. Ozzy

    Ozzy Moderator Moderator Mushroom Doctor Cannabis Doctor

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    Change the color of your text, it is unreadable
     
  3. MycoFreaK

    MycoFreaK Member

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    Seems complex. I'm terrible at building things. One day soon I'll buy a lower end model but for now my SAB works well enough. Nice job though!
     
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  4. Openbar

    Openbar Member

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    Changed to red, Is that any better?
     
  5. Openbar

    Openbar Member

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    It's really basic. your only cutting 5 pc of plywood then some paint.
    I think there is video that is really similar on the youtube too
    Makeing a flowhood was one of the best things i could have done to help my success rate with anything i mite want to touch.
     
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  6. MycoFreaK

    MycoFreaK Member

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    * so 5 pieces of wood glued together. What else? A blower? A frontal hepa filter? What type of blower, filter?
     
  7. Openbar

    Openbar Member

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    The blower is in picture. And it's a true hep filter. The 99.98 or whatever rating.
     
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  8. MycoFreaK

    MycoFreaK Member

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    Ok, I'm seriously considering that I could make one, instead of paying 1000$ for some overpriced lab flow hoods I can build for 200$, easy.
     
    Last edited: Mar 19, 2019
  9. n0j0y

    n0j0y Active Member

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    Lots of posts of people doing them on here. I just winged it and came out fine. I just made a few mistakes, my HEPA was deeper than anticipated and I put my blower completely into the box vs outside of the box like most do which made mine mighty deep, but enclosed is handy since I can store stuff up top too.
     
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  10. MycoFreaK

    MycoFreaK Member

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    So what are the components of the filter, a box, inlet fan, pre filter and the main hepa filter on the front? Am I right?
     
  11. n0j0y

    n0j0y Active Member

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    Pretty much. I use a dial to throttle the fan at the outlet since I didn't bother to do any math to match fan and filter to get the proper flow.