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metaphoric
Mr. Bater



Registered: 05/18/15
Posts: 730
Last seen: 2 years, 2 months
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Discreet Flow Hood
#21839404 - 06/21/15 09:31 PM (8 years, 7 months ago) |
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I recognize that I'm less then 100 posts in too shroomery, let's move past that. So I've been growing for a while now, pf teks and such, but getting much much more into straight grains lately. My SAB is as effective as I need it to be, but it's a total pain in the ass; especially now doing G2G, I use a lot of 1/2 gallon jars. I've had plans for a self built flow hood when I move, but that's still nearly a year away. So here's what I'm thinking:I buy the two main components (fan/filter) now. I take a heavy duty XL trash bag and cut the bottom away from it. Using Silicone I seal the newly cut opening to the rectangular opening of the fan. I then seal the top opening of the plastic bag to the edges of my HEPA 12x24x12, just like you would with wood. I'd have a leak free air chamber pushing straight from fan to filter. It's of course a lot more vulnerable without a wood casing but I'm not worried about accidental damage.  I can't really see a downside but before I spend the $300~ on fan and filter I want to bring it to the table and get some opinions...
Edited by metaphoric (06/21/15 10:28 PM)
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jsncrs
DYEL

Registered: 01/16/14
Posts: 1,170
Loc: Mars
Last seen: 3 years, 7 months
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Can't see why it wouldn't work in theory. Don't think it would be very durable however. Also, I'm no expert on hoods but the lack of rigidity and strange shape and creases of the garbage bag could cause uneven flow.. just a thought.
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metaphoric
Mr. Bater



Registered: 05/18/15
Posts: 730
Last seen: 2 years, 2 months
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Re: Discreet Flow Hood [Re: jsncrs]
#21839665 - 06/21/15 10:25 PM (8 years, 7 months ago) |
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Quote:
jsncrs said: Can't see why it wouldn't work in theory. Don't think it would be very durable however.
Yeah I think my only real concern would be the force of the blower overpowering the strength of my seal. I'm not worried about any 'uneven flow' because it's nonsense. The blower will do it's job and push air, which will have only 1 place to go: through a HEPA air filter. I'm thinking if I apply my silicone, place the bag, ziptie it all down, then use a pin to poke holes all the way around the bag where the silicon is lined; with some gentle pressure the silicone will squeeze through the pin holes and dry with a firm grip on the HEPA.
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drake89
Mushroom Magnate



Registered: 06/26/11
Posts: 4,168
Loc: TN
Last seen: 4 years, 10 months
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You are barking mad if you think a trashbag will hold enough pressure without bursting at the seams.
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maddchef
Vaginal escape artist



Registered: 09/04/09
Posts: 5,602
Loc: Your mom's vag
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Re: Discreet Flow Hood [Re: drake89]
#21840769 - 06/22/15 06:54 AM (8 years, 7 months ago) |
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Just search schmuv box. You can buy the components so you have them but your idea likely won't work.
Also its gonna be loud as a mofo so there goes discreet
-------------------- In the land of the blind, the one eyed man is king. All mushrooms are edible, but some only once..... Easier than cakes I do science and shit.
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metaphoric
Mr. Bater



Registered: 05/18/15
Posts: 730
Last seen: 2 years, 2 months
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Re: Discreet Flow Hood [Re: maddchef]
#21840872 - 06/22/15 07:54 AM (8 years, 7 months ago) |
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The noise is fine… it's really just a space issue. I'd be using the components to build a legit flowhood down the road but why is it you're thinking it won't work? I'm all for constructive criticism and working toward solutions so let's figure this thing out.
Drake says the bag will burst at the seam but I don't know that I'm as quick to agree. It's not like wrapping a balloon around a fan where the pressure is simply building and building until it pops. The air flow has an escape through the filter regulating pressure. I'm not thinking about using a regular kitchen trash bag either, I'm talking about super heavy duty types they use on construction sites.
But let's indulge the idea that it would still burst at the seems, and not just go calling people mad without trying to contribute... What if I took a tarp, used a heat sealer to double seal it to itself in an O shape? That would certainly hold a lot better then a heavy duty trash bag and I'm still able to keep the whole thing tucked in a corner until moving day.
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maddchef
Vaginal escape artist



Registered: 09/04/09
Posts: 5,602
Loc: Your mom's vag
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For the space of the stretched out trash bag you could just build one. Hell my box isn't but about 18in deep.
My 24x24 hood is smaller than a speaker amplifier simply because I got a compact filter and not one of the 12in deep ones requiring a foot of plenum.
For the bag not to burst you would probably need a filter with high flow/low resistance which won't be the greatest for actually using as a hood but good for scrubbing air.
-------------------- In the land of the blind, the one eyed man is king. All mushrooms are edible, but some only once..... Easier than cakes I do science and shit.
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drake89
Mushroom Magnate



Registered: 06/26/11
Posts: 4,168
Loc: TN
Last seen: 4 years, 10 months
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Re: Discreet Flow Hood [Re: maddchef]
#21843071 - 06/22/15 07:50 PM (8 years, 7 months ago) |
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Yeah you can build one with off the shelf wood and a hacksaw and drill. Why be discreet? I have seen 12x12" hoods if you want to start small
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Juiceh
Dabbing All Day



Registered: 09/25/12
Posts: 3,208
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Re: Discreet Flow Hood [Re: drake89]
#21871359 - 06/28/15 11:46 PM (8 years, 6 months ago) |
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The trash bag plenum idea sounds really awkward. Whats discreet about a HEPA filter attached to a blower by a trash bag? I think that would draw more questions than a built flowhood box.
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metaphoric
Mr. Bater



Registered: 05/18/15
Posts: 730
Last seen: 2 years, 2 months
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Re: Discreet Flow Hood [Re: Juiceh]
#21872116 - 06/29/15 06:32 AM (8 years, 6 months ago) |
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Yeah you guys are right. Thanks I sometimes just need to hear other people thinking about it to get out of my own head. I've ordered my Blower (465 CFM) and my Filter (24x12x11.5). I'll be building it up right.
Discreet was probably the wrong word to use, I think I was looking for (1)easy to assemble/disassemble when I move. And (2) a back up plan if my construction skills fell through . I psyche myself out easily when It's something I haven't done before but I just had to remind myself… you're just building a box with a hole in it idiot. Everything should be here in about a week, I'll probably have it built a couple weeks after that. (I procrastinate like no other).
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jesuisravi
The Old Noob


Registered: 06/24/15
Posts: 260
Loc: Midwest USA
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When you get it built please upload photos.
-------------------- Most of my beliefs I acquired from my father and from John Wayne, and anything that wasn't ultra tough and ultra cool was to me ultra embarrassing. In fact, I lived in a state of near continuous embarrassment, never measuring up to the ridiculous standards I had accepted without question, applied to a framework of expectations neither I nor anyone else could meet.--J C Amberchele almost nothing important that ever happens to you happens because you engineer it. Destiny has no beeper; destiny always leans trenchcoated out of an alley with some sort of 'psst' that you usually can't even hear because you're in such a rush to or from something important you've tried to engineer. ” ― David Foster Wallace, Infinite Jest
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Nature Boy
Stranger than most



Registered: 07/09/07
Posts: 8,241
Loc: Samsara
Last seen: 2 months, 6 days
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Re: Discreet Flow Hood [Re: maddchef]
#21891948 - 07/03/15 10:04 AM (8 years, 6 months ago) |
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Quote:
maddchef said: Also its gonna be loud as a mofo so there goes discreet
LOL! I have a commercially produced flow hood. The sound isn't THAT loud, and it certainly isn't offensive sounding...just a decent hum and a bit of a whooshing sound - not much louder than your average conversation.
N.B.
-------------------- All submitted posts under this user name are works of pure fiction or outright lies. Any information, statement, or assertion contained therein should be considered pure unadulterated bullshit. Note well: Sorry, but I do not answer PM's unless you are a long-time trusted friend. If you have a question, ask it in the appropriate thread.
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