AJ Peacock
10-06-2009, 04:51 PM
I am setting up a casting area in my basement and am contemplating solutions to the ventilation issue. I will only be casting with clean lead/alloy ingots in the basement (no smelting etc.).
Our house originally had an oil furnace which we replaced with a natural gas furnace a few years ago. The original metal flue/chimney was capped, as the high efficiency NG furnace used a small PVC exhaust.
I'm considering using the original furnace chimney as the ventilation for my casting pot. I'll attach a 6" metal flue to the cap and run 10' of ductwork to the casting area. The cap sits about 6' off the floor and about 8' from a workbench along the same wall. I'll have an inline duct fan at the cap and 10' of 6" flue running at a 30 degree angle along the cinder block basement wall to my work bench. An adjustable elbow will sit over my Lee 4-20 to draw off any fluxing fumes etc.
The inline fan is similar to this one, but has 250cfm rating. http://www.homedepot.com/h_d1/N-5yc1vZ1xr5/R-100067594/h_d2/ProductDisplay?langId=-1&storeId=10051&catalogId=10053
When I'm not casting, I'll simply cap the 6" flue at the old cap and leave the "casting chimney" open at both ends.
What'dya think?
AJ
Our house originally had an oil furnace which we replaced with a natural gas furnace a few years ago. The original metal flue/chimney was capped, as the high efficiency NG furnace used a small PVC exhaust.
I'm considering using the original furnace chimney as the ventilation for my casting pot. I'll attach a 6" metal flue to the cap and run 10' of ductwork to the casting area. The cap sits about 6' off the floor and about 8' from a workbench along the same wall. I'll have an inline duct fan at the cap and 10' of 6" flue running at a 30 degree angle along the cinder block basement wall to my work bench. An adjustable elbow will sit over my Lee 4-20 to draw off any fluxing fumes etc.
The inline fan is similar to this one, but has 250cfm rating. http://www.homedepot.com/h_d1/N-5yc1vZ1xr5/R-100067594/h_d2/ProductDisplay?langId=-1&storeId=10051&catalogId=10053
When I'm not casting, I'll simply cap the 6" flue at the old cap and leave the "casting chimney" open at both ends.
What'dya think?
AJ