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North Spore Shop: Boomr Bag

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The Laminar Flow Hood Five Million Build Log * 10
    #28901836 -

Project Complete!
this write-up is a work in progress


Something's happening... After only a year and a half of planning, revisions and heel dragging I've finally completed the... queue fanfare
✨ Flow Hood Five Million ✨




I don't math good, but I got a grasp on it long enough to rough out a decent design. Then I got some great help from the wrinkle brains on here to work out the details.
The essential reading links below can explain the design concepts and math far better than I ever could. So I won't try.
I will add one nugget I picked up regarding the prefilter size.
"A good rule of thumb is about 28% of the HEPA max size down to the minimum duct requirement per CFM of the blower." -the_chosen_one

Once I was confident I had a properly balanced prefilter/HEPA/blower and understood the basic design elements, I turned my efforts to the hardest part... Not over complicating the damn thing.

The first sketch was wall mounted and had an A/V system. πŸ˜†


The next version had a fold up workspace that doubles as the filter cover.


prefilter is too large on this early design

After that I settled on a design with a fixed workspace shelf and a storage compartment. I like that one, but it's a bit beyond my craftsmanship to build well.



Ultimately, I opted for the most simplified version I could make. with a few shiny bits added to satisfy my inner magpie.





Overall size - 31" tall 26" wide 24" deep and sits on a 34"x48"x18" cabinet.
The workspace is about 39" from the floor.
Workspace is 30"x11" tempered glass the smaller riser is 24"x9"x3" tempered glass.

Parts are cut out


Dark walnut stain for the flats.


Edges are painted primer grey.


Prefilter backplate is hardboard, glued with construction adhesive.




Blower is spaced off so I can fill the gap with RTV, forming a gasket. After the gasket cures I'll remove the coins, apply thread-lock and snug down the bolts.


Plenum intake sealed to blower output with RTV.


Threaded inserts for blower bolts.


Felt weather stripping.


Parts List:
Many of these items were found, traded and/or previously hoarded over the last 294 years. so i'm providing links to similar parts for reference. Approximately $500 MSRP

Blower - Dayton 1TDT8



I had a few screws miss the mark




1tdt8 should provide about 320cfm at 1"WG and 240cfm at 1.15WG

24"x14”x6" H13 HEPA


Initial Resistance: 1.0"wg and an area of 2.3sqft/230cfm

12x12x1 Merv8 prefilter


12"x12" Return Air Vent Cover


-update-
I added a stainless steel shelf and a light fixture.

The lab is still a wreck, i'll get it sorted out in the next 19 to 34 weeks. πŸ˜‚

-nuther update-
I added a protective.
I was planning to make the cover from chalkboard, but I already had some frosted plexiglass that was about the right size. It cracked when I drilled it, but it all hold together. πŸ˜‚
The magnetic cabinet closures and leather drawer pulls worked out well. It stows above the shelf when the machine is in use.











AC Power Socket With Switch & Fuse
Wiring diagram

18awg 600v 13a wire

connectors are soldered.






Power circuit installed and sealed with RTV.


Threaded inserts
1/4 - 20 Tee Nuts To bolt in the blower and
Rubber Feet.

#8-32 tpi Solid Brass Wood Insert Used with the Knurled Knobs for the intake vent cover.

Glass Monitor Riser

Cabinet Door Magnets

Chalk/white board front cover

3/4 Plywood

Misc - Various and sundry hardware bits, caulk, glue, thread-lock, etc.

Check out the Induction Coil MK1

Essential reading

Shroomry Search

Sandman's DIY Laminar Flow Hood Clean Bench Megathread

Box fan flowhoods, Glove boxes, Positive pressure boxes and Automated Mono-Tubs

How to Build a Basic Flowhood

c10's Flow Hood Build

DIY Laminar Flow Hood Build by HoneyBadger9321


⚠️WARNING⚠️
Screwing with electricity can and will knock your dick in the dirt.
Be safe, have fun!

Edited by Scemilope (05/15/25 05:10 PM)

Extras: Filter Print Post Top
Re: The Laminar Flow Hood Five Million [Re: Scemilope] * 1
    #28901932 -

:congrats:

Extras: Filter Print Post Top
Re: The Laminar Flow Hood Five Million [Re: Scemilope] * 1
    #28901935 -

Really nice work and build log!

Hope it serves you well for a really long time. At least until you can build that A/V wall mounted system. :wink:


--------------------
Stoned Gummys | BRF Pucks | Primo Reusable Plates | Easy LI 4 Preserv & Propo
"Psychedelics are powerful substances. Nothing that powerful is completely safe... and nothing completely safe is that powerful!" - Abigail Calder at ALPS 2023
Don't Panic

Extras: Filter Print Post Top
Re: The Laminar Flow Hood Five Million Build Log [Re: ReverendMyc] * 1
    #28902074 -

Nice build, very clean and well thought out.

Where did you find info on intake size to filter size ratio?

One trick that's worked for a long time is to oversize the blower and restrict the intake until the flow rate is just right.

Thanks for sharing

Extras: Filter Print Post Top
Re: The Laminar Flow Hood Five Million Build Log [Re: deadmandave]
    #28902083 -

Thank you!
I'll try to dig up the conversation about the intake size. If I remember right (doubtful) it was with someone who specs out HVAC duct systems professionally. The purpose is to establish and maintain static pressure (I think). That was half a years worth of bongs ago though, I definitely don't remember the details. πŸ˜‚


--------------------
This hobby has taught me many things.
Most of those things are patience.

The Hitchhiker's Guide to the Shroomery
The Official Shroomery Cultivation Museum
CakeWars
III

Edited by Scemilope (08/07/24 10:27 AM)

Extras: Filter Print Post Top
Re: The Laminar Flow Hood Five Million Build Log [Re: Scemilope]
    #28902087 -

Here's the conversation about intake size.
https://www.shroomery.org/forums/showflat.php/Number/28719397#28719397


--------------------
This hobby has taught me many things.
Most of those things are patience.

The Hitchhiker's Guide to the Shroomery
The Official Shroomery Cultivation Museum
CakeWars
III

Extras: Filter Print Post Top
Re: The Laminar Flow Hood Five Million Build Log [Re: Scemilope] * 1
    #28902089 -

Looking good, can only imagine the amount of hours spent into this beauty.

If I may ask, how much did this project end up costing you?

Extras: Filter Print Post Top
Re: The Laminar Flow Hood Five Million Build Log [Re: Steez]
    #28902091 -

Steez said:
Looking good, can only imagine the amount of hours spent into this beauty.

If I may ask, how much did this project end up costing you?


Thanks!
About $500usd if I hadn't traded for or already had some parts and supplies. I've spent about $300 out of pocket.


--------------------
This hobby has taught me many things.
Most of those things are patience.

The Hitchhiker's Guide to the Shroomery
The Official Shroomery Cultivation Museum
CakeWars
III

Extras: Filter Print Post Top
Re: The Laminar Flow Hood Five Million Build Log [Re: Scemilope] * 1
    #28902102 -

Very nice job!


--------------------
Method for Small Scale Casing Pasteurization

How much really fits in a 00 capsule?

Micro and Macro Mushroom Photography

Can you freeze mycelium?


Extras: Filter Print Post Top
Re: The Laminar Flow Hood Five Million Build Log [Re: RoscoeReturns] * 1
    #28902153 -

Beautiful stain job, I'm a sucker for natural stained woods


--------------------
πŸ…ƒ πŸ„΄ πŸ„° πŸ„ΌΒ  Β  πŸ„² πŸ„» πŸ„Έ πŸ„½ πŸ„Ά πŸ…† πŸ… πŸ„° πŸ„Ώ

"The lips of wisdom are closed, except to the ears of understanding." - The Kyballion, Three Initiates

Advanced Research of the Chronological History of Artifical Intelligence X

Extras: Filter Print Post Top
Re: The Laminar Flow Hood Five Million Build Log [Re: Herme5] * 1
    #28902181 -

Herme5 said:
Beautiful stain job, I'm a sucker for natural stained woods


Thanks! Me too, my dad used to put me to work in the finishing booth at his cabinet shop. I could never get two cuts to match, but I can sand and stain like the karate kid. πŸ˜‚


--------------------
This hobby has taught me many things.
Most of those things are patience.

The Hitchhiker's Guide to the Shroomery
The Official Shroomery Cultivation Museum
CakeWars
III

Extras: Filter Print Post Top
Re: The Laminar Flow Hood Five Million Build Log [Re: Scemilope] * 1
    #28902185 -

How's your contamination rate now?


--------------------
The better guide to grow mushrooms.
https://www.shroomery.org/forums/showflat.php/Number/8553541

Beware the power of one.  The power of two. The power of many.

Extras: Filter Print Post Top
Re: The Laminar Flow Hood Five Million Build Log [Re: vicepope]
    #28902189 -

vicepope said:
How's your contamination rate now?


Dunno, I haven't run a session with it yet.


We'll see what the test plates say in a couple more days.


--------------------
This hobby has taught me many things.
Most of those things are patience.

The Hitchhiker's Guide to the Shroomery
The Official Shroomery Cultivation Museum
CakeWars
III

Extras: Filter Print Post Top
Re: The Laminar Flow Hood Five Million Build Log [Re: Scemilope] * 1
    #28902572 -

That thing is slick!

You should put a little window with RGB LEDs where the motor is so it looks like a hot shit gaming PC

Extras: Filter Print Post Top
Re: The Laminar Flow Hood Five Million Build Log [Re: CocaineBuffet] * 1
    #28902801 -

CocaineBuffet said:
That thing is slick!

You should put a little window with RGB LEDs where the motor is so it looks like a hot shit gaming PC


Now we're getting somewhere.
:discofever:


--------------------
This hobby has taught me many things.
Most of those things are patience.

The Hitchhiker's Guide to the Shroomery
The Official Shroomery Cultivation Museum
CakeWars
III

Extras: Filter Print Post Top
Re: The Laminar Flow Hood Five Million Build Log [Re: Scemilope] * 1
    #28906515 -

:rockon:


--------------------
helpful links
my FH build

Extras: Filter Print Post Top
Re: The Laminar Flow Hood Five Million Build Log [Re: Scemilope] * 1
    #28906602 -

this is clever, thorough and very well fleshed out. great job scemi, one of the best build logs ive seen.


--------------------
----<><><>----

⁂ tail-lights, back-pockets, rearview mirrors ⁂

⁂ guides | grows | supreme air box | sporeaddict ⁂

Extras: Filter Print Post Top
Re: The Laminar Flow Hood Five Million Build Log [Re: fiddle_head] * 1
    #28906661 -

fiddle_head said:
this is clever, thorough and very well fleshed out. great job scemi, one of the best build logs ive seen.


Thanks!
I just poured some plates, we'll see how they do. The new workspace feels good.


--------------------
This hobby has taught me many things.
Most of those things are patience.

The Hitchhiker's Guide to the Shroomery
The Official Shroomery Cultivation Museum
CakeWars
III

Extras: Filter Print Post Top
Re: The Laminar Flow Hood Five Million Build Log [Re: Scemilope] * 1
    #28917427 -

Several sessions in now, and everything is shiny! Seems to be working great! πŸ˜ƒ
The new workspace and workflow feel good.
I just added a stainless steel shelf and a light fixture. I still need to make the blackboard/filter cover.

The lab is still a wreck, i'll get it sorted out in the next 19 to 34 weeks. πŸ˜‚


--------------------
This hobby has taught me many things.
Most of those things are patience.

The Hitchhiker's Guide to the Shroomery
The Official Shroomery Cultivation Museum
CakeWars
III

Extras: Filter Print Post Top
Re: The Laminar Flow Hood Five Million Build Log [Re: Scemilope] * 1
    #28928421 -

Hands down the most aesthetically pleasing build I’ve seen. That shelf is so siiiick


--------------------
ABCD stands for Always Be Collecting Data

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North Spore Shop: Boomr Bag

Mushrooms, Mycology and Psychedelics > Mushroom Cultivation
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