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Posted

My current home made paint booth is under powered and has several air leaks. I am using a range hood unit that only pulls about 175 cfm.

I recently purchased a new Dayton blower (1TDR7) rated for 485cfm. I plan on building a new bottom backdraft booth from scratch.

There will be a plenum area on the back of the booth.

My concern is where and how to mount the blower. Should the whole blower be in this space or should it be mounted on the outside (top) with a whole cut for the inlet? What wuold be a good material to use as a seal around any hole I cut/

Any pictures or diagrams would be very helpful in my design.

Thanks

Danger

Posted

Nice looking spray booth, Aaron. How do you get the square exhaust to fit round duct work? Is it a 4" opening? I've thinking of getting that exact motor and can't find anything for the square to round conversion.

Posted

I never got as far as running ducting, a bear trashed the garage shortly after I got the booth built, and I have never fully cleaned up. I found by setting the booth up near the garage door the exhaust blows outside and lets the booth do its job.

With a blower this size you need 6" duct, 4" doesn't even make it onto the the chart for figuring out the back pressure. There should be an adaptor of some sort available, but I'm just going to cut a round piece of wood to adapt the duct to the fan when I finally get around to it (1 1/2 hours to a real hardware store and I alway forget to take my measurements when I'm going into town).

Posted

you should just build it on a rolling table so you can roll it right to the window and have the sit outside

no ducting needed

That is basically what I'm doing now, I have a table set up near the door so I'm inside protected from direct wind and sun / rain. The natural breeze carries the fumes blown out the door away, not back into the garage. Eventually I do want to run duct so I can move it to the side instead of having it right in the middle of the doorway.

Is that the type of fan found in a heater? A squirrel cage I believe it's called?

Yes it is a 485 cfm Dayton shaded pole blower (aka squirrel cage)

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