How to Build a DIY Laminar Flow Hood
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- Опубліковано 22 чер 2023
- We join host Hoocho who explains Laminar and How to Build a DIY Laminar Flow Hood
Check out my first channel: / @hoocho
Patreon: / hoocho
There is a way of scientifically figuring out fan requirements:
www.orchideenvermehrung.at/en...
The Filter:
K&N 20x24x1 HVAC Furnace Air Filter, Merv 11, HVC-12024
amzn.to/3Jwbisy
The Prefilter:
www.bunnings.com.au/powerfit-...
For a filter the size I used (plus prefilter) 710 CFM did the trick
The Fan: DUCTURBO 8 Inch Inline Duct Fans, 710 CFM With Variable Speed Controller (Aus):
amzn.to/3JtJC7F
Similar output fans (US)
I have no experience with these... But they have same CFM output:
amzn.to/3Xm5aIQ
amzn.to/3PpLBNR
Slightly lower output fans (US)
I have no experience with these... But they have just below the CFM output:
amzn.to/3JpWbkj
1200x1200 Ply Basic Box Cut Sizes:
3 sheets 600x600
1 sheet 600x581 (19mm Ply, or subtract the thickness of ply from the height)
160mm (160 for slanted due to fan width) or 200mm (200 for vertical filter install) x 600 for the back space.
And then depending on your filter size and angle of filter you'll need another spacing piece.
200mm Hole in top for fan will require jigsaw.
Videos Used for Visuals:
Air flow visualization - lamsys
• Air flow visualization
Horizontal Laminar Flow Hood Smoke Test - Terra Universal
• Horizontal Laminar Flo...
Laminar Flow, Turbulent Flow and Reynolds Number (Lesson 3, Part 2) -Fluids Explained
• Laminar Flow, Turbulen...
Hanging out in the flow hood! Doing cultures, agar and more - Practical Mycology
• Hanging out in the flo...
KO Optical Lens Assembly - Knight Optical
• KO Optical Lens Assembly
Laminar Flow Waterfall - Jesper Öqvist
• Laminar Flow Waterfall
Welcome to "All the Gear. No Idea"
Where inexperience meets enthusiasm.
On this channel we explore hobbies and pastimes for the first time, looking to expand our skills and experience by seeking out new and exciting pursuits.
Conquering our inexperience with pure enthusiasm and perhaps even discovering our ikigai along the way.
I work in a cleanroom, the whole thing is designed like this, it's pretty trippy. I appreciate that you always show your mistakes and learnings, and always knew you were an engineer, didn't realize you're a bit of a scientist too!
🤯
What a great video. Definitely the best I have seen so far! Huge appreciation for all the information.
This helped me understand laminar flow better than any other video I've watched.
Awesome design, even better was how everything fit together! But you do know that not everyone has a 3D printer right. It would have been nice to have a link of aftermarket parts or a material list from a manufacturer to source collars or adapters from. Anyway great job!
Nice project, can't wait to see it evolve.
That fan is way over-priced at $200. You can build one from a used shop-vac motor, grinder or drill and a cheap fan that'll move +700 CFM easily for $25.
speed controllers cost $10.
Do you have any links to making your own fan please?
In from the US, this was an amazing video. Loved how you showed your full path of learning with us. I love this format.
Dude! You’ve been reading my mind lately all your videos have come exactly when I need them! serious are you listening to my conversations?? Haha. Awesome content as always!
Dude i've been putting off DIY'ing this for like 2 years because the amount of research involved in finding out what amount of flow is required or strength of fan is so complex, appreciate this vid so much
"So that didnt work" hahah same.... Im glad you were able to work it out in the end. Hoping to fix my flowrate/turbulence issue as well
Thought myself about trying to build one of these so many times over the years. When I’ve looked into it several times before I was genuinely surprised that there wasn’t more content/info out from people DIYing their own. Thanks for working out everything and sharing it with us! This is really helpful. :)
Not that its perfect math, but having the ability to take this and double it to increase the width of the box and doubling the filters/fans its really nice. I will be using this design and adding some recessed lights to it since Im not a window fan. For doing mushroom bags it would be nice to have a bit more area to work with to have things staged.
Thank you. You convinced me to build my own hood. Construction is starting Monday-Tuesday when all supplies arrive. This will be perfect for my grow office!!!
Found this vid while looking into DIY laminar flow cabinets. I'm starting to play around with mushroom cultivation and this build is great.
Thank you!
I loved the video. I bought the same anemometer, not ideal. I love you showing the trials and tribulations. Awesome. I followed the Gordo Tek. But i will do another one and follow your design. It's really nice.
Why not rubber tubing between the filters. Just tape up the ends so they meet and you won't have to mess with the tape on the filters themselves. If you limit the ammount of space the air can get through with a glass pane you can run the fan slower for less noise.
This will me perfect for my plant tissue culture project! May we grow in peace.
I'm excited to try this out. I really appreciate you taking the time to make an affordable laminar flowhood and showing us how it's done!
I watched your fascinating ginger project then saw this laminar flow video. It’s not even a topic I’m interested in but you hooked me and I watched the whole thing! You have so many great ideas here. Thank you for sharing the good plus the mistakes.
This one looks more practical than the last build i saw. What is the height of the finished hood? I have a low ceiling. And are you still happy with the end result?
Fantastic Video! I'm going to add this to my short list of projects. I just recently picked up a cheap still air box, but it wasn't overly pleasant to use. This setup would be perfect.
Definitely building this for future projects, thanks for posting ❤
Amazing! Thanks for the content. I will be using this as my starting point and making a few mods for my space. 🙏
I like a lot of your builds but this is definitely the coolest one so far!
Nice work my man!!! One commentary: the use of a flexible alluminum duct will induce turbulent flow after the ventilator, maybe using a rectngular duct would enhance results.
The giggling at 8:19 seems so familiar to me! "Hey, I made/fixed/invented something! that actually works!"
You can use liquid nails, or wood glue to get a good seal between the joints in addition to the screws. Silicone will most likely work, but won't hold up as long! So long as you arent trying to disassemble it.
Beautiful just 3d print me the couple fittings you made hahahahaha
I had no idea before I watched and now I have a pretty good idea. I'd say that's a good video! Keep up the great work!
Could you please share the file for the adapter you created for the new fan, for mouning of the fan to the box?
Well done Hooch thanks so much for sharing it with us.
I saw a similar video last night and the guy added an acrylic sheet across the top at a 33 degree angle which cuts down any outside contaminants being sucked into the hood area.
Do you happen to remember that videos link?
The freaking hooch at it again, love your channel love your content!!! Cheers
12:30 I feel your pain. We've all been there. It's all just a matter of trial and error. You gotta keep on keepin on!
you are the man!! thanks !!
I like how you are a hydro guy and a mushroom guy and and inventer love you channels
Sweet build Mitch! 👍👍
I concur. 😉😁👍
Nice 1 Mr Hoocho. Excellent build. You could add one of those kitchen cabinet lights on the top to illuminate the work surface.
Or an LED strip.
Thanks Hoocho, going to be super useful for my mushroom cultivation! Always had contamination issues when going from grain spawn to bulk substrate. This may help in future
Could you please share that video? 😊
@@UltiMatz If I make some videos will link it mate. Might not be for awhile though :( Glad to hear you are interested in mushroom growing
let the grain colonise for longer :)
@@Theo-oi5nb true the jars do always look healthier the longer I leave them - or if they are contaminated its easier to spot.
Very informative. Watching you receive that filter that was a few inches shy of fitting up against the top of the cabinet, I wonder if that top "flange"/"strip" would then cause outside air to come in along the top of the cabinet and mix with your filtered air. So, looking in retrospect, would you adjust the height of the cabinet, and make the height lower so that it fits that filter exactly?
The ever lasting head aches of the self built.
As stated before but lost in the comments, the lighter dancing around indicates eddies. Gordotek describes this well also its been suggested wingds and top could make turbulence, looks nice tho
Good job man!
Thanks Hoocho
Hoocho! I didn't know you had a second channel! 😎
Very scientific mate. It looks great 🍺🍺
Just a heads up. You can over-blow your filters and force particulates out/through. I had to go digging in the manufacturers website but I did find the max CFM per square inch for mine. I run .3m/s myself as I feel that this is better as the air has a greater chance of depositing any contaminants in the filter. Not to mention my lamp isn't in gale force wind lol.
I was worried about that. Trying to flame sterilisation in a hurricane. You can get it to work with blowtorch sterilisation, but imagine the costs you'd run up versus a little alcohol lamp... I already have one of those blowtorches but those little bottles aren't cheap unless you get the magical fitting that refills them from 10lb bottles.
@@OffGridInvestor induction sterilising ?
Use induction heat for sterilization, stay away from alcohol burners in an active air environment.
@@concernedcitizen8419 Those things are 300+ dollars so if you're buyin sure. The alcohol lamp was 3 dollars and the fuel was 8.
Love the fact that this is all made from stuff I should be able to get locally.. Would it be overkill to make one of these so I can replace the protective screen cover on my phone without getting cat fur under it?
Very cool. I was considering buying a flow hood ($477 with tax for a Bonsai 12"), but may have to build one and save some money. Thanks for the video.
Holy hell. With these filters made in china along with the fan, you wonder where they dream up prices of nearly $500 for these things.
Great build..! What is the inside hole dimension on the hepa filter. I can’t seem to find the filter or the fan on Amazon Canada..!
I would take away the pre-filters on top or get a low resistant one.
Then you need to adjust the speed of the fan, ie airflow, until the flow get laminar, that means no flickering of the flame at all, flame should be stable in a 45 degree angle and not move at all.
Its usually lower airflow that you would guess. You can get a particle counter if you want to be absolute sure you hit the right flow for it to get laminar.
Looking to build one for plant tissue culture and orchid flasking.
I'd be worried in longer term about contaminants growing in high pressure box behind the MERV filter. Probably not a big deal, but there isn't good way to disinfect that area in your current design. Maybe adding small pluggable hole that you can put UV lamp in and disinfect it with light every now and then?
THEORETICALLY it shouldn't get anything but we all know theoretics isn't reality. Especially becauseofhow any condensed water leads to stuff growing. I thought he could just open up the rectangular filter and do a wipe down with alcohol inside there.
Hello, there is no need to apply silicone between the HEPA filter frame and the walls of the box and the countertop you are working on? Do you have an alternative for someone who doesn't have a 3D printer to mount the fan to the box? Thanks for the video, great job!
Hey mate love your videos, been following your main channel for ages.
I'm wanting to get started in tissue culture and curious from where you are sourcing your culture media and supplies in australia?
Flick me an email on “contacthoocho@gmail.com”
I’ll send you my order form for the lab supplier I got it from.
I’m gunna include it in my initial video but I’m happy to send it to you ahead of time
What did you use for the internal grey coating?
Appreciate the info, but the lighter shows how turbulent that flow is. Any idea why? Or are you satisfied as is?
Excellent DIY mate , very simple to make , thank goodness no 3D printing required , I don’t own one , not everyone does , box easy to make a 8” fan 2 filters for above it and the flow filter below and some perspective , easy as , will have to see the costs for filters and fan the main costs think , very doable thanks for sharing mate , liked and subscribed , another Ozzie 👍
I like it
Is there no bottom on the air chamber to hold the filter in?
Is the 250 including the 3D printer?
Great video but I’m rather surprised that the screen filter fits as it is 61cm and the box is 60cm wide. Have I misunderstood something?
Did you ever consider adding a UVC light?
Is BIG DOG a spearo?? What thickness wettie do you wear up there?? Using a 5mm in tassie during winter. How's the 3 metre flatties up there?
Ahaha yeah bro, I’m in a steamer at the moment. It’s chilly. Nothing compared to what you’re dealing with though.
Just did a dive off rainbow beach on Saturday.
Content incoming.
@@AllTheGear-NoIdea hell yeah, I plan to drive up the coast to the top one time and do a bunch of diving along the way. The 5mm open cell basically stops any cold water getting in. The face is the only bit that is frozen.
a link for the prefilters would be awesome
Also it doesn't appear that you're going to be able to change out your primary filter? correct me if I'm wrong but that would be a lot of work to not be able to replace the filter
Here is. www.bunnings.com.au/powerfit-h13-hepa-cartridge-filter_p6210793
hi, have you any idea on how to mesure real flow speed *?
Don't the sides cause turbulence?
Hey I’d really appreciate a mess back got some detailed ? I’d like to ask, before I take on this project
I'm so glad you have done this!
Are you going to start doing tissue culture and mycology now? Are you eventually going to make a gene gun?
I mean, that sounds like a blast
@@AllTheGear-NoIdea I wish you had an email of something. I've got a lot of great ideas I want to share with you.
problem i see with these fans are they are fans and dont work well with resistance- the rpms are cut by more than half blowing out nothing- when you could just get a strong centrifugal fan - possibly a floor dryer thats pushing 1200 cfm---- if its too strong just vent the flow
Did you/he end up using the "laminar flow frame"?
Doesn't it make more sense to have the HEPA filter on the pressure side instead of the fan?.. isn't that creating a bottle neck?
Word to the wise - most if not all of the vacuum and AC "HEPA filters" are not actually the medical grade filters you're in need of for this to work correctly. Is it better than nothing? You bet. Is it going to give you 70% + success rate? No bet.
You'd almost be just as well off with a standing flame from an alcohol lamp as with this setup and it's a LOT cheaper. (Notice how I said "almost" there?) 65% success rate for $250 or 55% success rate for $25.
can you sub the 51cm x 61cm for a 61cm x 61cm filter? that is currently easier to get
Yes. Just do the math
@@SleepMachine314 well I get that but my question was more so geared towards the gap in the top of the filter. If that's by design for air flow reasons or just because the filter is too small. You get what I'm saying?
Hoocho ??!
Don’t you need to use a true HEPA filter instead of HVAC for a sterile environment?
The hepa filters are on the top aide
@@justinmitchell8721and the fan and inlet can be contaminated, this is a bad setup
you look like hoocho
nevermind lol 😅😂
At first I thought this was someone ripping off your hoochos videos and claiming them as their own 🤣
Ahahah the Temu hooch
@@downunderfulla6001 who are you talking to? I can only see Hooch, linkatron11, and you in this thread
How do you know you are actually achieving laminar flow? The flame tests you did seemed unclear to me and the video I first saw on making a laminar flow hood used a particulate detector to confirm laminar flow and sterility (ua-cam.com/video/lInfdAVvBts/v-deo.html&pp=ygUXTGFtaW5hciBmbG93IGhvb2QgYnVpbGQ%3D). So your design is very nice but I'm not 100% confident it is a truly sterile environment (as sterility is hard to be 100% confident in). Also in that same video the infinity fan you talked about is linked for the video above at $68 NZD but you cited a NZD 238.63 fan as cheaper... Is there any chance you could clarify for me how you can be confident you are achieving laminar flow and also explain to me why you chose the more expensive fan while saying it is cheaper? Would really appreciate a response so I can be confident in trying this build myself.
H13 is your filtration level
Y'all have Kmart????
Now watch my lazy ass put a plastic tub up against 2 kmart vacuum cleaners attached with 3 tubes of silicon, half of which ended up in the carpet....
Your flow is powerful but that isn't the point of laminar flow! Your plenum design is all jacked up, the lighter flame should be constant without flickering or dancing at all. The air can be as filtered if you want but if it isn't laminar the edges will draw in contaminants and also the filter can get too much force and things will shoot through.
As long as it pushes the air out. And you let it run for 5 min before performing anything on it. It will work perfectly.
@@mauriciogarcia5920 incorrect. turbulent flow will introduce contaminates coming from outside the enclosure
@@Milkex 🧢. I've seen many growers without laminar flow succeed. I'm going to make a video.
@@mauriciogarcia5920 tight. yet another video of a turbulent flow food. that's what this planet truly needs.
just buy a FFU if you can't properly design a plenum ez pz
@@Milkex There's various degrees of right before it goes into turbulent flow. I'll demonstrate this by pouring 20 agar plates on the flow hood by adjusting the voltage of the fan. First with turbulent flow then laminar.
I really appreciate all the work you put into this, but that is not laminar flow. That DIY filter nor that K&N filter are going to provide laminar flow, and that plenum is not the correct dimensions, nor does it have baffles. There is a very specific 12" thick filter with embedded straws that provides laminar flow, and there is a lot of math to match the fan/filter/baffles/plenum that still need to be spot on even if you were to attain the proper filter.
Now, I would like to iterate that I am not shitting on your design, not in the least, quite the opposite actually. Looks like a pretty decent method to filter air, and I adore that your "laminar flow hood" has an actual hood! You get extra points for that my guy! Almost zero videos claiming to be flow hoods actually have an actual hood...
Overall, I grade this a B+. Although it doesnt provide actual laminar flow, laminar flow is not needed for mycology, just clean somewhat steady filtered air to blow across your work surface. If you are utilizing this tool for electronics repair, I am ignorant as to whether or not laminar flow is actually needed for that purpose, I suppose it is not a strict requirement for this purpose either. You get better than a passing grade, especially because you implemented an actual hood in the design!!
Yeah I also left a comment above asking how he can be confident in his laminar flow. Do you know of any better resources for a DIY flow hood? Having trouble with being confident in other tutorials as well.
@@vitamin9165 for Mycology, or electronics? For Mycology a BBFFU works great, its super easy to build, and only costs around $70 in parts
@@WhiteBeardHashtag1205 For mycology. Thanks for the response I think I'm gonna move away from a laminar flow hood and give BBFFU or a still air box a go.
@@vitamin9165 I would suggest the BBFFU. SABs are quite restrictive of movement, and you normally have to sit to use them, and long periods of that can be hard on the back. Best of luck to you
@@WhiteBeardHashtag1205 I'll definitely take that into consideration and have a look at BBFFU construction. Thanks.
If The flame moves it ain’t laminar, you need to actually reduce the suction a little bit
Nice point.. in build.. oh you need cad a 3d printer and other stuff. Crap..ive run alphacam microvellum and all sorts of equipment. Man you just blew any budget the average myco grower. Plus you haven't acheived laminar. Jeez you had me at first glance, but I'm a woodworker as well. You gotta be careful when telling people on diy. You're way way over budget than a store bought one. Might work for plant tissue but myc. Uggg
Why do people call them hoods when they never install them above the work area, but rather in front of it?
wtf?! hoocho is living a double life?