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  #1  
Old 06-16-2006, 05:20 PM
Katsura Katsura is offline
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DIY Paint Booth with SHower extraction fan

Sorry about the number of questions asked recently! I'm really getting into modelling and needs lots of advice, thanks for all your great tips.

Today I went to B&Q and an idea came up about construting a DIY paint booth with extraction fan.

I'm thinking about getting a big plastic crate (those type you stire misc stuff), which is smooth and flat on the inside walls.

I'll then drill a hole in it, and connect a IY shower extraction fan to it - the one I saw came with an induction port, flexi tube (extendable), the fan and extraction port.

The output is something like 180m/3 air flow. Is this enough and would this project be dangerous? ie, extracting flammable fume towards an electric motor not protected?

Do I need to add some kind of foam in between the duct and the fan?

Please let me know if this will be safe enough, if it's not then I'll abandon the idea.

Thanks.
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Old 06-16-2006, 05:55 PM
freakray freakray is offline
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Re: DIY Paint Booth with SHower extraction fan

If you're spraying paint you need to have an explosion proof fan to be completely safe, with open brush motors, there is a risk of fume ignition due to the sparks created by the motors.

Bathroom fans are no explosion proof so you create a risk in using them, I recommend looking for another alternative.
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Old 06-18-2006, 10:00 PM
mbwoods mbwoods is offline
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Re: DIY Paint Booth with SHower extraction fan

Quote:
Originally Posted by freakray
Bathroom fans are no explosion proof so you create a risk in using them, I recommend looking for another alternative.
bathroom fans have to be sealed as it wouldnt have to be affected by moisture and condensation, so i think they would be fine
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Old 06-18-2006, 10:02 PM
freakray freakray is offline
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Re: DIY Paint Booth with SHower extraction fan

Bathroom fans are not explosion proof. They may withstand some non-flammable moisture, but as far as being non-sparking (i.e brushless motors) they are not classed as explosion proof.
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Old 06-18-2006, 10:03 PM
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Re: DIY Paint Booth with SHower extraction fan

what fans are? are they specifically labeled explosion proof?
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Old 06-18-2006, 10:07 PM
freakray freakray is offline
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Re: DIY Paint Booth with SHower extraction fan

Yes. In the UK you can look for EX classed motors on fans. Brushless fan motors are explosion proof by design.
The ideal fan type for a spray booth is one like this:



Note how the motor is totally separated from the area where the gas will flow.
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Old 06-19-2006, 12:16 AM
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Re: DIY Paint Booth with SHower extraction fan

you could use a couple computer case fans, those are brushless.
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Old 06-19-2006, 07:45 AM
freakray freakray is offline
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Re: DIY Paint Booth with SHower extraction fan

The big 6" brushless panel fans are better, can be had for reasobably cheap too from panel suppliers.
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Old 06-19-2006, 08:40 AM
Katsura Katsura is offline
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Re: DIY Paint Booth with SHower extraction fan

Thanks everyone.

Freakray: where in the UK can I get fans like the ones you shown?

Are they specialist suppliers?
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