Ventilation. This might be useful to some

yomomma

yomomma

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Ontario - Hamilton area
Available at Princess Auto. Looks to be a good start for a casting station. Few modifications and some sheet metal...

https://www.princessauto.com/en/detail/touch-up-paint-spray-booth/A-p8729535e

8729535.jpg
 
I salvaged a range hood from a renovation, Has a variable speed fan, lights, and $10.00 worth of aluminum flashing for a backsplash, sides, and a casting surface. A large cake pan or cookie sheet under the casting pot will save your feet when the bottom pour valve sticks
 
10x said:
I salvaged a range hood from a renovation, Has a variable speed fan, lights, and $10.00 worth of aluminum flashing for a backsplash, sides, and a casting surface. A large cake pan or cookie sheet under the casting pot will save your feet when the bottom pour valve sticks
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Similar to what I did. Not everyone has lots of room for a range hood nor a place to exhaust them. Mine can now be fully enclosed for powder coating baking.

wk0Nhok.jpg
 
At one time I took the front panel and drum out of a clothes dryer. I was not into casting at the time but was looking for a spray booth. In hindsight and Yomomma's adaptive skills this could have become an ideal fume hood in which casting could have been done indoors. The cabinet was roomy, inflammable and had a built in exhaust fan. If I still had this unit I would adapt it for casting by installing an electrical outlet inside the cabinet as well as a nice LED light. I'm just throwing an idea out there as Yomomma has done above.
Peter
 
Speaking of ventilation. This is my casting station. It exhausts to the outside via 8-9 feet of 4" dryer ducting.

CastinPot.jpg

Currently a 4" 80CFM duct fan is installed just before the ducting exits the house.

Would it be more effective if I moved the fan closer to the pot?

Thanks,

M
 

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yomomma said:
Depends on how airtight all your joints are.
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The ducting is one piece and only has 3 joints. Fan to dryer exhaust vent, ducting to fan and ducting to fume hood. All three joints are taped.

It is exhausting air but not as much as I would like.

M
 
flex vs straight won't make a difference at that length, need more fan power.

is it not sucking all the smoke out?
 
Lead doesn't produce fumes till over 1200 degrees. Unless you're fluxing in your casting pot, there's no need for ventilation.
Cooking down wheel weights is a different story. The powder coat and whatnot is toxic af.
 
BigRobb said:
Unless you're fluxing in your casting pot,The powder coat and whatnot is toxic af.
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those two reasons and the fact that i get free fans regularly from work are why i'm going to install one once i get my bench built. it should also take some of the heat out during the summer months.
 
Spawn-Inc said:
flex vs straight won't make a difference at that length, need more fan power.

is it not sucking all the smoke out?
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It's moving some air for sure. I tried doing some brazing under the fume hood recently and ended up setting the basement smoke alarm off so it's not quite up to my expectations yet. Not sure where to get a bigger 4" duct fan from. PA doesn't sell one.

M
 
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gnmontey said:
It's moving some air for sure. I tried doing some brazing under the fume hood recently and ended up setting the basement fire alarm off so it's not quite up to my expectations yet. Not sure where to get a bigger 4" duct fan from. PA doesn't sell one.M
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HomeDepot has inline booster fans for round duct. I have a 5 inch that is rated at 220cfm. I think they even make a 6 inch.

https://www.homedepot.ca/en/home/p.5-inch-round-duct-air-booster.1000509007.html
 
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gnmontey said:
Ha, I looked at the homedepot website and couldn't find any in-line duct fans? In fact, I still can't find one when I back track through the link you posted???

Do you think a 6" fan installed in 4" ducting would improve things?

M
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if you do end up doing that i would put the fan as close to the outlet of the pipe going outside (as you have already) and run 6" pipe from the intake of the exhaust fan to your lead pot. The bathroom exhaust fan that i have has a 6" outlet but i plan to reduce it to 4" and have about 1-2 feet of pipe to get outside. I'm going to build a plenum (8x8" duct) with 2 or 3 4" take offs for my lead pot, powder coating "booth" and then a spare for odd jobs. the exhaust fan that i have is good for 290 cfm.
 
Remember, you need a fresh air intake. I've seen a good setup struggle in a well insulated area due to lack of intake air.
I have two huge 1000 cfm fans. They gain 25% more rpm when the man door is opened and things can flow.
 
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