DIY Laminar Flow Hood Build
ฝัง
- เผยแพร่เมื่อ 27 เม.ย. 2022
- Materials
Top and Bottom : Two 25.5"x12" Plywood 3/4" Thick
Sides : Two 13"x12" Plywood 3/4" Thick
Back : One 25.5"x13.5 Plywood 3/4" Thick
Hepa Filter : fungi.com/products/24-x-12-x-... ($290 W/ Shipping)
Blower : www.amazon.com/1TDT8-Blower-M...
Screws
Silicone
Bolts
Building a laminar flow hood for aquarium plant tissue culture - วิทยาศาสตร์และเทคโนโลยี
THANK YOU!! I've built two flow hoods and by far this is the best video I have seen so far thank you!!!
Love that lighter test
I like how all the sawing and building was done inside and on kitchen table or living room floor. Makes me feel not as bad when I cover every square inch of carage with fine coat of dust from a few cuts. Although I would bring my shop inside if it were up to me. Nice build. I was thinking maybe before joining walls to silicone joints before tightening screws. I missed part of video writing this so sorry if you sealed on a later step. Where and price fir filter and fan specs. Did I calculate size be feel or matmatical equation. I feel like one may eyeball most specs and it work fine.
Nice job !! Thx for the references.
Nice build!
Nice demonstration. Excellent outcome. I like it better when you provide instructions via speaking. You've got a pleasant voice, and you typically are exuberant. I also like to see your face wile you explain. While clearly a good demonstration, I watch your channel because of you and your content, not just your content.
Thanks Michael, I didn’t have a lot of time to do a whole tutorial and production on this one but will in the future
Thanks a lot for the video, I'm planning my build out now . Not sure if i am going with this size or maybe a 24 x 24.
My original thought was to go with a 24 x 48 until i started pricing the hepa filters lol.
Great job on yours.
How did the wiring go?
Got the same exact filter looking to build my own soon, do you know if a inline fan would work or stick to a blower? Do you have multiple speed settings or just one? Thanks!
Blower for sure, use the model I did or same specs. It has two speeds
@@AquaMayne Noted, Thank you for taking the time to reply I appreciate it!
How loud is the fan on the higher setting? Also is there enough air-flow to safely perform culture work on the lower speed?
I had to use high flow to get enough airflow. Its not too loud
Nice! I’m building one in a day or two roughly the same size. Although my filter is thicker so it’s going to require more plenum volume. 😒
Pretty cool contraption you have there. 😊
Yeah i'd probably give a bit more plenum volume as well but was trying to keep it compact. Hopefully its okay.
Are you going to put a pre-filter on there blower motor? That could help slow down the airflow a little bit, which wouldn’t necessarily be a bad thing.
@@l.slayer551 yes I’ve thought of adding one just need to find the right size filter
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?
The filter is still going
Everytime i do a project, i do it ontop of finished surfaces too... especially ones that my wife likes.... She loves that
You better
dumb question but what are those vices that hold the boards at a 90 degree angle while drilling? sweet setup
If you havent found the answer yet they are just corner clamps. can get em pretty cheap.
I forgot what they are called lol but can get them at Home Depot
So after a year now how has this flow hood been working for you? Have you made any further modifications to it. Have you experienced any contamination?
Hello. It is still working great. I’ve added a pre filter and also a speed controller so I could adjust the blower speed.
Would you mind posting links for the blower motor and the filter? Just curious how much this build costs.
Yes I will work on a full list with links and put it in the description. Full build was around $500. About half price of buying a prebuilt one with these exact specs.
added
How did u wire it
Thought about putting pre filter on top over the motor?
I did install one later
why not just use one of those
I'm trying to understand the mechanisms behind laminar air flow, because I'm interested in building a much smaller laminar air purifier. I know that the purpose is to create a bubble of clean air, and the key is to ensure that the outflow air has a uniform speed and direction to prevent dirty air from mixing in. If the outflow air had different speeds and directions across its width, turbulence would mix in dirty outside air.
Some questions about this particular laminar flow hood design:
1. How well would it still work if the volume inside the box were smaller or larger?
2. How well would it still work if the filter were smaller or larger?
3. How well would it work if a HEPA filter were used on the input side instead of the output side, and a low MERV filter were placed at the output?
How does the blower get the right angle when it’s barely pointed at an angle towards the front ? I know that’s the correct way I just always thought u would have to have it facing directly towards the filter
Air pressure, the box is sealed. There is only one direction for air to go. It also help removing turbulence.
if you want laminar flow, you should never put fan facing filter...
Can you give information about the speed of the fan?
The 1TDT8 is a two-speed fan that puts out 797 CFM on high or 549 CFM on low, at 0 static pressure. It is not designed to be used with a variable-speed controller, either, using one could damage the motor.
Dayton blowers are used for DIY flow hoods because they are capable of pushing through the heavy static pressure of a thick HEPA filter.
Em what size of bolts did you use please?
1/4" I believe
Can you swap out filter though?
Yes
It looks like your fan is too powerful for laminar flow....that is semi laminar with some turbulant airflow....
you need 100 ft/minute flow...
my advice would be, buy a speed controler for your fan and dial it back....
It’s semi turbulent at the bottom and decent in the mid. I added a pre filter box at the top since this video and it slowed it down a bit. Did a test with Petri dishes let them sit for about 5 mins in front of it with success.
good idea on the fan control!
@@AquaMayne yea pre filter can work too....
speed control is cheap,but i dont know if they work with all fans/motors...
@@Lipi19821 just bought one
A variac/variable transformer might be the best type of fan speed controller. Some cheap non-variac controllers introduce a humming or buzzing noise (WTF?) whereas variacs won't. Also, variacs offer infinite adjustment: from the fan barely moving all the way to full blast.
Hey man so I copied your build pretty much word for word and I think my flow is still too powerful even on low speed any tips to slow speed down to laminar flow?
did you do a lighter test? I built an enclosed box above the filter after this video and added a pre filter. that slows speed some and also preserves the hepa filter
@@AquaMayne copied your vid and added the box to enclose the fan, I got the Dayton 1tdt8 blower. When doing the lighter test it blows out the flame immediately unless I move back 2-3 ft. I looked up the issue on shroomery and they said try putting a town over pre filter and that seems to make it work but not very good on motor, not sure what to do
@@CeLTicSurvival yes I added a pre filter
@@CeLTicSurvival I wouldnt add a towel I would add another pre filter or a pre filter that doesnt let as much air through
@@CeLTicSurvival Also did you see that the fan has two ways to wire it? One high and one low setting.
Damn😳
It looks a bit too strong? Is it not?
I said this because I hate telling people they’re wrong. This is definitely too strong. Your lighters flame should be around 45’ and should not flicker and jump at all.
@MushMaam hello yes it was too strong , I’ve since added a pre filter and blower control knob :)
Sweet!!! Glad you made it work! 🎉
I think the sides are suppose to be 12”x 12”
they are 13x12 to account for the .5" plywood on the sides
You buy? And sent to Germany? 😅
Yes with a pre payment :)
@@AquaMayne what would the size cost with shipping to Germany? I don't have the time to build one and I don't have the skill if it fits I'd like to take one.
@@akapilzlover187 I can check on shipping price, its probably a lot. I will find out.
@@AquaMayne yes please 😎
Your either single or the Mrs was out for the weekend!!
Being single rules!!!! I have a Ducati in my front room !!!
oh wow great. thanks a lot .
regards
rajat form india
Maybe list of supplies?
In description
looks like to much flow. your flame, from what others say should only bend at a bout a 45deg angle not a 90.
Yes it was , I put a pre filter on after this video and a fan control. Solved the issue
But still had no contamination with the original state in the video
how do you replace the fan lol
If the fan ever needed replacement in 5-10 years you would unbolt it and bolt a new one on
@@AquaMayne i meant filter *
They usually last around a year iv been told if used daily
You would have to take it apart about half way, replace and reseal.
Pro tip. Use in small room that has already had a heppa filter scrubbing the air for a day or so. So when you turn this on, your not loading it up with much contaminate. Much easier to swap out a filter designed to be swapped out then your home made box. Unless your doing days and days of work, you'll prob never need to replace it.
For anyone looking to build....midwest grow kits have better price on laminar filters.
look under Supplies/Flow Hoods & Clean Room Supplies and scroll down.
found it nice! @@LESSISMOREMOREORLESS
dude wtf lol