|
Safety -- Make sure you are safe! |

2025-01-24, 9:09pm
|
Hyped Newbie
|
|
Join Date: Jan 20, 2025
Location: Mass
Posts: 5
|
|
100th ventilation question
Hey folks!! Ive searched through quite a few old posts to try and learn about how to properly vent my new set up, but Im still struggling to sort it out.
Im setting up in my basement. Concrete floors, stone and brick foundation/walls. Ive got a window directly infront of my table so I can easily vent directly outside. And about 10 feet to my left is a full size door to the outside I can open for replacement air. The furnace and water heater are on the other side of the room around a corner so Im not too worried about air pressure affecting them.
I thought about getting this vent fan, and propping the window open enough to secure it to one side, lined up with the torch and just block/insulate the open side.
It claims 988cfm, and I wouldnt need ductwork. Not sure if I should put a hood infront of it?
I dont have enough post history for links but this is the title of it on amazon
"HG Power 10 Inch Metal Exhaust Fan with Switch, Powerful Garage Exhaust Fan with Damper, Potable Wall Mount Fan Fume Extractor Ventilation Fan for Shop, Shed, Basement, Chicken Coop, Silver"
Thoughts?
|

2025-01-24, 9:26pm
|
 |
Loving learning
|
|
Join Date: Oct 11, 2010
Location: Florida
Posts: 11,714
|
|
Check the noise rating. And what size is your basement? Could you use a dimmer switch with it?
__________________
My current "hot" fantasy involves a senior discount on glass & tools!
|

2025-01-25, 8:29am
|
Hyped Newbie
|
|
Join Date: Jan 20, 2025
Location: Mass
Posts: 5
|
|
I tried adding images and cannot yet, but my basement is 1100sqft, nearly twice as long as it is wide. And Im setting up at one end.
I found a different fan that has a variable speed controller. Claims 1130cfm, and 63dBa.
|

2025-01-25, 3:58pm
|
Senior Member
|
|
Join Date: Feb 02, 2010
Posts: 3,505
|
|
As Eileen stated, the size of your basement determines the CFM of your fan. And keep in mind that if you use flexible ducting or any bends between your torch and the fan will reduce the amount of actual CFM. Better to go bigger and not need it than smaller and have to do it all over again.
__________________
ESC
Soft glass on a Minor/concentrator since 1996
|

2025-01-27, 1:13pm
|
Hyped Newbie
|
|
Join Date: Jan 20, 2025
Location: Mass
Posts: 5
|
|
So, if I have an 1100sqft basement, a 1130cfm fan, and I will have nearly zero duct work, I should be good?
I'm setting my table up in front of a window and the fan will be set up in that window to vent directly out. The door I can prop open for replacement air is going to be about 10 feet to the left of where I'm sitting, perpendicular exterior wall to the vent window.
|

2025-01-27, 9:48pm
|
Senior Member
|
|
Join Date: Feb 02, 2010
Posts: 3,505
|
|
And rigid ducting, not flex ducting, right? If so it looks like you'll have the minimum necessary for the average torch.
__________________
ESC
Soft glass on a Minor/concentrator since 1996
|

2025-01-28, 3:29pm
|
Hyped Newbie
|
|
Join Date: Jan 20, 2025
Location: Mass
Posts: 5
|
|
Quote:
Originally Posted by ESC
And rigid ducting, not flex ducting, right? If so it looks like you'll have the minimum necessary for the average torch.
|
Cool, sounds like I should be good!
|

2025-02-10, 8:06am
|
 |
Shelarious
|
|
Join Date: Jul 18, 2007
Location: Cincinnati, OH
Posts: 1,967
|
|
For basement studios, I would really go overboard with what you need. You didn't mention your torch, or what you are using for oxygen, or if you are fuming, etc. There's a lot of factors at play with ventilation and I think that small kitchen vent system is in adequate.
Here is what I purchased for my third floor (large area) set up. It's quiet (mostly) and I haven't needed to use it on full power. It was not cheap but it's worth every single penny. It's been cleaned up a bit since the photos below on my IG.
https://www.amazon.com/gp/product/B0...e?ie=UTF8&th=1
I added a large galvanized hood and attached with aluminum tape. I put two layers of fine metal mesh over the fan to keep hot particles out, and I have it placed directly in front of my torch and immediately venting out the window. I used one duct reducer to get to 8" and used a dryer vent system installed in the window.
Picture of it
__________________
~Shelley
To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts. To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
|

2025-02-10, 1:31pm
|
Senior Member
|
|
Join Date: Jun 19, 2021
Location: los angeles
Posts: 164
|
|
Quote:
Originally Posted by ESC
As Eileen stated, the size of your basement determines the CFM of your fan. And keep in mind that if you use flexible ducting or any bends between your torch and the fan will reduce the amount of actual CFM. Better to go bigger and not need it than smaller and have to do it all over again.
|
I'm going to politely disagree with the size of the room determining the CFM rating. That is not correct. The CFM of the fan will be determined by the flow required either at the operators work position or in the ducts themselves. That means the flow past my face is far more important than the size of the room I'm working in. Proper make-up air effectively nullifies the size of the room.
Ultimately, 100 fpm flow velocity is recommended for fuming so I use that as the benchmark and work backwards from there to size the fan considering all the ducts, bends, materials, etc. Not simple but certainly not black magic either.
__________________
Bobcat on 15lpm and Phantom on HVLP
|

2025-02-10, 7:42pm
|
Senior Member
|
|
Join Date: Feb 02, 2010
Posts: 3,505
|
|
Quote:
Originally Posted by rcktscientist
I'm going to politely disagree with the size of the room determining the CFM rating. That is not correct. The CFM of the fan will be determined by the flow required either at the operators work position or in the ducts themselves. That means the flow past my face is far more important than the size of the room I'm working in. Proper make-up air effectively nullifies the size of the room.
Ultimately, 100 fpm flow velocity is recommended for fuming so I use that as the benchmark and work backwards from there to size the fan considering all the ducts, bends, materials, etc. Not simple but certainly not black magic either.
|
Quite right
__________________
ESC
Soft glass on a Minor/concentrator since 1996
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
All times are GMT -7. The time now is 5:56am.
|