How To Design And Build A Laminar Flow Hood: Part 2 - Build 

That’s the most beautiful flow hood I’ve ever seen.

That Woden mushy made an impulsive like button. Great job 👏

Nice build. I'm watching this because I am building something totally different - a fume extractor for a CNC laser, but it uses a lot of the same ideas. Also, just wanted to point out that silicon is a chemical element which is basically a hard, metal rock. Silicone is what you use for caulking =)

Nice job! Only point I'd make is a recommendation to stain and finish the wood with lacquer or polyeurathane of some kind. Raw open wood can hold all manner of contaminants. Love the channel!

You don't need to use birch, but it will paint nice. Cheaper alternatives would be either AC or BC sanded pine. The letters stand for the grade of wood used on each side. "A" has no knots, "B" may have some small knots with "football" plugs covering larger ones, "C" will have knots. Also when cutting birch or oak, the side facing up will splinter when cutting with a circular saw. The bottom side won't. It may also happen when using pine, but that depends on the blade you're using.

Finally..thanks so much again...crisp and clear...cheers Tony

Hello Tony, can we get a short video or an update on the flow "hood" after two years of use? Thanks. Love the Content. Always a pleasure coming back to your content. Keep up the good work! 👍🏻

You know, I feel that fungi manipulate us in a certain way to continue reproducing them, even though I do not feel bad about that

Well done guys! I'm sitting here watching this, drinking my morning coffee with a scoop of Thrive 6 mushroom powder. When all of the sudden I realize that this video is from the same company. Small World.

Sweet video man. Now all it needs is a nice seal job and flip the switch! Thanks for sharing bro!

Quick question :- Wont there be fungus eating the wood?

Hi Tony? Thanks for sharing. I downloaded the full built plan and there are many info. Actually I am using a glovebox to do my orchids seedlings but am getting too many contaminations on my flasks. Planning to build a laminar flow hood to do my orchids seedlings and this will help. Bye, Daniel from France.

I think I might copy that there's no need to change it

Hey again, I asked for help about a year ago with agar. Today my mushroom farm is over a year old and brining in steady sales. Thank you for your help way back when! Clear Sight Farms

Amazing channel and info! Keep it up man! Video suggestion; how to make a spore print/spore seringe and how to properly store them.

I want that mobile workshop!

Hello! Do you have a plan for 12×12 laminar flow hood? Thank you! Your video was very helpful.

Ill be starting this build this weekend. How long did this take you? I'll have some help from my grandfather that is an carpenter as well.

So you're pulling the air through the filter? Then blowing that clean air into the box and through the directional aluminum face? Did I get that correctly? I'm building one with aluminum and Glass panels. Was going to have the filter last and not 1st like you have it. Not sure if that makes a difference or not 🤷‍♂️

Silicon is an element and silicone is an adhesive and sealant.

I've seen some used Laminar Flow Hoods online that seem to be cheaper than buying all the materials to build this. Does anyone have any strong reservations about a used one? I love being hands on and this video and you alls plans are very detailed and helpful! Just want to be the most frugal and time conscious for a project I'm working on

LMAO that mushroom shaped cord holder is the best. Btw, just binged watch your 18 videos from oldest to newest. Definitely learned a lot in the last few hours, so thanks a lot, mate!

Nice job & thanks for making the plans free to those wanting a horizontal laminar flow hood. The only thing I think I may have done different is paint it with an anti mold paint/primer. At least on the inside. Probably sprayed on smooth so the porous wood didn't hold any dust. What was the total price to build it & how has it been working for you?

Am having problems finding a HEPA FILTER WOOD FRAME 24 X 48 X 5 7/8. Any suggestions on where I can find one?

nice video, appreciate the efforts u have put into Tony. i am trying to build one (24"x24") but not sure which material HEPA filter to buy (aluminum,steel or anything else that i might not be aware of) lightweight, provide the expected results and also not cost that much. Any suggestion...?

I bought a book on growing mushrooms about a year ago, and put it down dismissing mycology as to complicated. I started watching your videos and now things seem a little more simplified. Thank you for your content.

Im following since first videos and I repeat : BEST mushroom channel for sure! Good vibes from México! Next year I will try my own flowhood, I just need a Hero Friend like him LOL

Many talk about how they built there flow hood but you showed step by step, I retired in 2017 and moved from Arkansas to iligan city philippines and i just received 24 x 24 inch hepa filter today and blower 3 days ago, building a flow hood and going to grow mushrooms here in philippines.

If you want to build one for a LOT less money, see my vid "Build Your Own Laminar Flow Hood for less than $100 (really WORKS!)". Hundreds of people have built these already and I've received nothing but positive feedback, not a single complaint. I show in the vid laser particle counts, flame test, how to tune and use, how to adjust the flow, do a 5 minutes empty plate test, and a complete spores to harvest grow to demonstrate that it works.

Hey can anyone help with the wiring?? Did you put the ground wire to the screw in the metal. Thanks!!!

I hope this isn't a dumb question, but when do you turn it on? While you're working? Is it left on all the time? 30 mins before transfers?

Absolute legend!!! I cannot wait for this channel to hit 1mill subs. You sir are a true hero of the night 🍄

SiliCONE not silicon. Very nice box!

Thank you!!!!

How often would the HEPA filter need to be changed? seems like an involved task with this design. Looks great otherwise

Really informative thanks Tony! Could you give me a rough idea of how much it cost for the materials? I’m just getting started growing and I’m tempted to save some dolla by building my own laminar flow, cheers :)

4:25 The joy on his face when things work out as planned. Nice job!

I just build mine with your tips. Thanks for helping out a new and enthused mushroom nerd!!! I have my lab up and running. Having a ball!

I've come not only to think, but know so!!! My mushrooms are my greatest advisors in life too. There is a fair exchange. I see the wisdom of fungi as a universal knowledge, which they figured out! Had to respond, as few people mention such thoughts! If there is one thing I truely believe, yes, I believe in mushrooms, and love them!

awesome tony!

Nice job! Would there be any advantage to building to front frame out a little to make a sort of tunnel to work in, or is the flat face effective enough?

If you place masking tape along the cut line, it will greatly reduce splintering.

Hi Tony, thanks so much for this video! I copied your design and it works really well. The only issue I'm having is the hot air. Perhaps my space is a bit small and not properly ventilated but wanted to ask if you have any recommendations to avoid or improve on build to avoid the hot air generated from motor? Mine is blowing 32 degrees celcius air!

We're not worried about doing the calculations and then adding a pre-filter? Probably no issue those house filters don't restrict much. I have a furnace fan that I was going to repurpose into a air cleaner for my woodworking space. If I make this hepa removable it'll do both very well. Don't want to clog the hepa with wood dust. Or do I. I do like my lungs...

1000th like, great video! Love all of ya'lls stuff! Very informative and the most professional formatting (good taste in music too). :)

This video was dope. Also, what is the song playing around 9:00 and 10:00?

I'm really glad I found your channel. I just want to say thank you for sharing this info and showing us the whole process; some of us need a visual to learn something new :) I now have what I need to start growing my Lions Mane and Reishi.

Is that a big enough plenum for laminar flow? I dint see that mentioned in this build. Fire build tho BTW.

Hello. Love your videos. Thinking about building this hood. Realizing how hard it is to find a 24x48 filter and when you do how expensive they are. Could i not take two 24x24 filters and silicone the center seam?

Great video Tony. I subscribed in order to get the plans and ran into a problem with the link that arrived. In Firefox, the link begins to open tabs, one after the other, in the browser at rapid speed (was up to 99 tabs within 7 seconds before I closed the browser). This was a repeatable bug. I pasted the link into Chrome and the pdf file loaded without any problems. Thought I should let you know. While I'm at it, might as well let you know that video 1 would not play on my smart tv (Panasonic). Error message says something about an unrecognized format. Video 2 plans on the tv just fine. Thanks for the plans. cheers.

Hey could you please share how much space you have of table, in front of the flow hood, I mean, what’s the coverture area of the air flow. I’m building a table for mine but I don’t know how much space to leave for working area, and I want to take the most advantage of the converture area of air flow from my flow hood. I built exactly this one

Hi. Where I can purchase AstroCel Hepa filter, can you let me know please?

Something I am running into that I thought I would share. I was lucky enough to score an autoclave. Seems like most people are using pressure cookers and wont have this problem but if you are running a lamina hoods it might be something they have an issue with and I am now curious about your setup in particular. My autoclave draws 14.5 amps and now I am looking into adding another breaker for it. I was just wondering what this fan draws and if you might of have the same problem? Probably not a problem for most but just something else to think about when getting into this adventure and you are trying to figure out costs.

Great video! question, i'm getting ready to build one but i want it to be thinner/deep from front to back so it takes up less space on my table, how much less space can i leave? also is there a good way to give the blower different speeds so if it's too strong i can dial it down?

Awesome video! I’ve read plans on how to build a flow cabinet but watching you guys really helps a lot. Thanks! How are you going to replace the filter when needed?

are filters with 99.97 efficiency OK for mycology? I was told that this is the MOST commonly sold efficiency ratings.

Really nice build and great plans. Thank you so much. You asked for corrections so here's mine. There's a difference between silicon and silicone. two different words, two entirely different substances. Silicon is the element used to make transistors. Silicone is a polymer (that does contain some silicon) that is used as a sealant. You used the word silicon both in your speech and in the plans. Change both to silicone. The pronunciation is different also. thanks again.

Hello Tony! Where can I buy the HEPA filter. I need 24"x48" double size Hepa filter and the blower Dayton brand, please give me the specs for the blower machine and the filter for the blower. Did you use Palo Tsina plywood for the frame?, could it withstand when the blower and hepa filter works together . What about the 5 wirings, what are these for? If you could give me where to buy those? Thank you very much. I will not skip ads to support you on your channel every time i watch it. I have already subscribe and hit likes button. God Bless you.

Is this a 5 7/8" deep filter? How long did this filter last? I'm trying to build one, but I don't want to use the 11.5" deep model. Does the depth really affect the life of the filter that much?

What if we flow the air through a isopropyl alcohol container... It should remove any contaminants...

hello, thank you for the tuto ! can you please tell how you adjust the flow ?

Anyone wanting to build one of these, found the best video. Thanks for sharing. Peace

Still trying to figure out how 6.18 inches is 6 1/8th but 6 1/8th as a decimal is 6.125.

in my opinion using wood is completely flawed. u cannot see what is happening inside? is dirt gathering inside? maybe mold? it is completely out of your control. it is better to make it plexiglass, and ideally with some door to open it and clean it. though the very idea is good. i would recommend making plexiglass improvement. even just one plexi or small plexiglass door would make a difference to keep it hygenic. i have enjoyed your movies and your channel, so i am giving u my honest feedback.

Hmmm did u calculate in the pressure loss from the pre filter? I suppose having an 100cfm over blower is good for that loss.

Is the request to get the plans emailed to us still viable? I usually prefer to make my own stuff and I really liked the simplistic and straightforward design for this!

I don't know how laboratory test the flow hood but I imagine some fog test and see if see if the air give a consistent flow. I imagine too much pressure or too little pressure will cause turbulent.

what if i wasnt able to do the carpentry and didnt have the space for a full box/hood, and decided to use a BOX FAN behind the HEPA FILTER and that's it. will that work???

Do you have the information for the 24x24? Fan filter etc.?

Everything about this was great. Any possibility to cover more on wiring the chord and switch though? Seems no one can find that info across the board on all myc forums

Wish id of had this video 2 mo ths ago.

Hi, are you sure it does laminar flow ? Have you properly test the flow ? Nobody show the test of these diy stuff.

Why did you capitalize the and in the second video, but uncapitalize it in the first video.

What kind of person pronounces, "process" like that?

This is great! I love your content. I've been setting up a small lab space for yeast culturing for sake brewing. I'm also building an incubator for making koji (rice inoculated with aspergillus oryzae). I just realized that this is also pretty much the same equipment I need to grow mushrooms, so I was thinking I'd try to grow something easy like Lion's Mane. 1. When using a flow hood, do I need to worry about safety? E.g. if I try to grow mycelium on an agar plate and it's contaminated with something bad, do I have to worry about air blowing directly toward me? 2. In my yeast lab, I'm currently using an alcohol lamp. Brewing blogs say that this creates a small "sterile" field around the lamp because of the flame's updraft. Would this work for mushroom growing?

Awesome build. Right now I'm using a positive pressure glove box for my work, but I'm waiting for a 2' x 4' HEPA filter like yours that I'm building a blower for from scrap parts. Will definitely reference your videos during the build for the great info.

is there a specific reason why the overall cabinet is 20" deep? 6" thick HEPA filter + 6" wide blower = 12". Would a 16" deep cabinet be sufficient? 20" deep cabinet on a 24" deep stainless steel prep table seems like a bust. thanks in advance for your reply!!

That's awesome! Only thing I would change is to add a 10-15 micro farad capacitor to eliminate the wind up on the blower motor. The motor will start instantly and also last a lot longer.

Looked online everywhere. Couldn't find a 24"X48" astrocell 1 hepa filter. So????¿???? Now what

Ugh the wiring part is so vague, wish you took some more time in that, not trying to burn my house down lol.

Awesome vid my friend, hows it still working for you ?

How much for the total build?

Where do I get "a friend with the tools and the knowledge"?

I know a little improvement that would help extend your filter life and efficiency at filtering out the bad stuff. Install a uv-c lamp that is usually installed in hvac systems. This will kill all the air once it passes the pre-filter on the top of the box that is built around the blower intake. Uvc helps to kill all germs, bacteria, and viruses.

Alright.... still air box it is then.

Pocket hole screws would be a good option for this.

Where do you get the hepa filter and the rest of the stuff?

Nice. Does anyone know a link to a video showing how much air is coming out? Like a flame or smoke test video? All the calculation videos I've seen don't give me any kind of idea what I'm looking to have acceptable flow coming out. What's too much, what's too little and useless. I'm thinking about using pvc to make a box I can walk into, covered pvc frame with painters plastic filter mounted to the pvc frame and a shop vac pulling air from the opposite side. Will I have enough flow in front of a small hepa filter? I'm just learning all this and have only been growing for 5 months. Did my 1st lc to agar in my kitchen in open air and had 4 out of 20 dishes grow something extra. If my idea will help me reduce to 0 out of 20 I'll do it but I'm wondering how much air you want blowing past you as your working on your projects?

Do you have a link for the hepa filter? I am struggling to find one matching the description. I was trying to find the 24 x 48 astrocel partical board frame with .3 micron filter size

can you give a heads up on where you were able to find the the 24x48x5-7/8 heap filter

awesome video. I will try to build this

Overall such a great video and build but you totally skipped over how to wire the toggle switch! Come on, that's kind of important

What was your total cost to build?

wiring explanation would be appreciated. where is the green grounded in your box or your blower. which are connected to your power switch? Your first section explaining connected wires do not coordinate with all the wires still sticking out in the box in the following shots.. please help me, I built the whole thing and am stuck on this basic wiring. connecting directly to power is no problem with the diagram- how do you put the switch in the mix...

im srilanka.bt I want buy hepa filter.how buy it?

So the question remains, was it cheaper to do this by yourself than buying a mass produced one ?

Any idea where to buy the filter for this big now a days ?

So I'm building this now and the wiring diagram doesn't show the ground being used. Did you use the ground in the little grey box on the blower? In the build plans you said to ensure that its grounded properly... I'm not trying to hire an electrician lol. Thank you for this video and build plans!

@Freshcap Mushrooms How did you wire the switch? You sped through the wiring part and didn't show how you wired it. I looked through the pdf and you didn't show a clear picture of what went to what. I understand liability and all that but if you were to at least show a clear view of the wiring it would help alot of us out with not having to shell out more of our hard earned money on an electrician. Help us broke growers out!

Where did you source this filter!? I cannot find one this big anywhere for sale on the internet, some community outreach would be much appreciated!