DIY spray painting extractor fan
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- Опубликовано: 5 сен 2024
- This is how I made an extractor fan for spray painting small items in the workshop. Its made from standard bathroom exhaust fans and an old A/C return air box.
Unfortunately, I think my comment about using a flyscreen for the filter medium didn't come across as I intended. Just to clarify I was explaining how a flyscreen frame could be used to fit the filter cloth to.
Cheers.
Thanks for the video, it gave me the idea of putting the fan(explosion proof which I got from my father) into a window and closing the window down on it. I will then make my portable, collapsible booth fit the opening, thanks again.
No worries Bill, al the best with it mate.
Again proof that necessity is the mother of invention.I have similar one. Good job.
Thanks mate.
American woodworking tricks / Stolarskie Triki actually it's economy is the real mother of invention.
Would you say something more about that solutions on your channel?
Once again some great Aussie Engineering your always thinking outside the box.
Thanks mate.
Great repurposing job Victor and gives me foos for thought on an upcoming project I have in mind. Keep the awesome videos coming mate
Thanks very much Gordon. Good to see your name in the comments, mate.
You're brilliant at this type of thing mate!! Don
You're too kind Don, thanks very much.
Clever idea & I presume that's similar to a fine dust extraction machine that you mount to the ceiling, great insight mate 👍👍
Hey thanks mate.
Wow, standard bathroom fans?!! In the states ours are like computer fans compared to yours!! I will be nice, could let loose with some jokes. But seriously great repurposing of those.
Hey, thanks very much Robert. Good luck with those tiny fans mate :-)
Nice job!
Charles A Berg Thanks Charles.
That looks great mate...;-p
Thanks Eye.
As the motor from the fans is in the airflow could flammable paint fumes and small sparks from the motor not create a potential fire risk?
No I don't think so. These being exhaust fans, the motors are fully sealed units in some kind of resin or plastic. I imagine thats to stop water vapour getting in so i'm not worried about fumes. Cheers mate.
what he has is a shaded pole induction motor, AKA Brush-less, no sparks what so ever
So any bathroom fan is sealed and will work with high VOC??
do you think that using domestic fans isnt dangerous with paint fumes
No. I rarely use solvent paints. I almost always use water based finishes and these fans are specifically made to operate in very humid conditions like a bathroom. The motors are fully sealed and encapsulated in some sort of epoxy so even solvent based paints wouldn’t affect them IMO
Would this type a fan help keep the majority of the fumes out of an adjoining house or do you need to run out via ducting?
Craig, this is a simple setup to catch the overspray only. if you wanted to control the fumes you would probably need to duct it.
Very useful! My one concern is what would the fly screen do? (Other than protect the blowies from getting their wings clipped by the fans). Would you then cover it with the A/C material? I have never been able to find a local(ish) supplier for that though, and online it seems to be really expensive stuff. OTOH I haven't a clue what the damned stuff is called.
lol, I realised after I posted the video that the flyscreen idea didn't come across as I intended. What I meant was that you could use a flyscreen frame and insert the filter material with the that rubber piping stuff same way you attach the flyscreen.
Hmm I wonder if I can just buy one of them Harbor Freight shop fans
Probably, but i wouldn't know, we don't have them here in Australia.
Thanks for the video ,there is something I cannot find on RUclips like how to housing powerful dust extractor fan, I have a small mining sampling lab with some crusher, I have two powerful fans I need to build them a housing, can someone please help
Thank you
It sounds like you need to talk to your local authorities to get that information so its done correctly and safely.
I hope you don't kill someone. Air flow inline with a sparking motor not one but two.
Sorry James but you're mistaken. The motors are fully sealed in some kind of resin or plastic. Think about their intended use as exhaust fans in a bathroom. They have to be fully sealed from all that moisture so no sparks at all.
👍🎯
Thanks mate.
Interesting
Thanks Leigh (I think) :-)
Yes, That was a positive comment.
I need to build a solution for the same problem....
Paint booth exhaust Fans need to be explosion-proof...an exposed motor can ignite organic vapors. Use non-explosion proof motors at your own risk.
to determine CFM requirement:
Step 1
Measure the length and width of the booth's face. This is the opening in the back of the booth from where the air will be expelled. The opening will span the entire work area.
Step 2
Multiply the length and width together to get the booth's face area. For example, if the measurements are 4 feet by 4 feet, the booth's face area is 48 square feet.
Step 3
Multiply the booth's face area by 100 feet per minute to achieve CFM. One hundred feet per minute is the guideline for air movement in the booth area. Using the example from above, 48 square feet multiplied by 100 feet per minute equals 4,800 CFM. This is the size of the fan needed.
Hi Michael, thanks for that. There is no need to determine the CFM for this setup. That would be total overkill for what i use them for. The motors are completely sealed units, i think they are sealed in resin because they are made to extract moisture rich air so thats not a problem either.
Michael, do you mean to say the face area is 16 square feet, requiring 1600 CFM?
@@DownUnderWoodWorks I've been investigating the option of an explosion proof exhaust fan for use in a small airbrush paint booth. The booths you buy as a kit apparently require use only with water-based paints. An article at industrialfansdirect (which is a dotcom site), "Are Bathroom Fans Explosion-Proof?" points out that bathroom exhaust fans are not up to the task. Another airbrush artist has pointed out that the risk of an explosion only becomes an issue if fumes are strong enough to cause dizziness. So as it is with other topics, there are opposing viewpoints.
well ill be damned... I assumed you Aussies pretty much made everything from wild dingos and superglue.... XD.. good on ya mate! JK buddy.. nice work... have you noticed any build up on the fan blades after awhile or no? Still getting fumes?
haha.. Funny thing, I notice that superglue or CA glue is a big favourite with the US makers I follow. Mate, there's no build up on the fans as I have a filter cloth in front of them and the fan unit is more for controlling overspray than fumes. i usually have the doors open when spraying.