I attached some links for reference. I need to build a cigarette smoke vent system. I thought of a "half hood" commonly used on a coal/coke forge. Centaur (see link) has exactly what I need, $239 for the 30" one + oversize shipping. Normally I'd bite the bullet and pay up, however I think its too much and I'd like it to go towards something else needed just as badly. Fixed income, here, never been cheap or all that frugal, but I am sick of having to pay up in excess when I know there has to be a better way.
So thinking about this,(value engineering LOL !) searching the web, I remember corrugated metal pipe we used to install for culverts and the shape of the end piece, the apron, given it has a collar clamp already, I think I can make this work, its $139, no shipping charge, available locally, the shape is similar and more than likely I will have to go for one. The need is of life/safety, as my elderly mother's health is involved here, as is mine as I have to look after her. She's a stubborn cigarette smoker who will not change.
How would you build it from sheet metal ? What gauge? It looks like a not so complicated pattern to cut, bend and fasten the top for an 8" collar, but I am no tin knocker or sheet metal fabricator. I can almost see how the sheet needs to be cut, but what about the top flange for a collar, just make a bend for a connection flange? Think I could do it for less than $139?
The metal culvert pipe apron I could add some sheet metal to make the enclosed part retain the exhaled smoke without spilling out, if necessary, as its darned close in shape and sure looks like the easiest way to get this piece and or something that should work.
I called a sheet metal fab shop, sent an email with pertinent information, photos of half hoods, one looked like a modified hvac duct piece, but I could not pin down what the piece is called, there are so many. In any event, the person on the other end was not so kind to even call me back, after I called in follow up. No one calls you back today, for whatever reason, I get the same thing when applying for work or submitting a resume, that's how it is today. Kinda ticks me off, as I need this thing built and installed yesterday. I've seen 55 gallon drums modified and many variants, but whats in the photo(centaur half hood) would be be perfect if I could make it myself. It will have an 8" fan and 2 90's to get it out through the exterior wall, from there I need to figure part 2 of it to get it away from the house.
I figure an 8" will give me enough CFM, (depending on the kind of fan) with direction changes and transitions. Probably no more than 18'-0" of pipe from the exhaust side and (2) 90's to get to a roof vent, and (1) 90 up just above the hood to the intake side of the fan, just to give some idea of what I plan to do.
Any and all help/suggestions much appreciated, thanks again !!!
Half Hood
8
So thinking about this,(value engineering LOL !) searching the web, I remember corrugated metal pipe we used to install for culverts and the shape of the end piece, the apron, given it has a collar clamp already, I think I can make this work, its $139, no shipping charge, available locally, the shape is similar and more than likely I will have to go for one. The need is of life/safety, as my elderly mother's health is involved here, as is mine as I have to look after her. She's a stubborn cigarette smoker who will not change.
How would you build it from sheet metal ? What gauge? It looks like a not so complicated pattern to cut, bend and fasten the top for an 8" collar, but I am no tin knocker or sheet metal fabricator. I can almost see how the sheet needs to be cut, but what about the top flange for a collar, just make a bend for a connection flange? Think I could do it for less than $139?
The metal culvert pipe apron I could add some sheet metal to make the enclosed part retain the exhaled smoke without spilling out, if necessary, as its darned close in shape and sure looks like the easiest way to get this piece and or something that should work.
I called a sheet metal fab shop, sent an email with pertinent information, photos of half hoods, one looked like a modified hvac duct piece, but I could not pin down what the piece is called, there are so many. In any event, the person on the other end was not so kind to even call me back, after I called in follow up. No one calls you back today, for whatever reason, I get the same thing when applying for work or submitting a resume, that's how it is today. Kinda ticks me off, as I need this thing built and installed yesterday. I've seen 55 gallon drums modified and many variants, but whats in the photo(centaur half hood) would be be perfect if I could make it myself. It will have an 8" fan and 2 90's to get it out through the exterior wall, from there I need to figure part 2 of it to get it away from the house.
I figure an 8" will give me enough CFM, (depending on the kind of fan) with direction changes and transitions. Probably no more than 18'-0" of pipe from the exhaust side and (2) 90's to get to a roof vent, and (1) 90 up just above the hood to the intake side of the fan, just to give some idea of what I plan to do.
Any and all help/suggestions much appreciated, thanks again !!!
Half Hood
8