Hi everyone i am new on this forum 

my question is : i have a woodstove chemney 6inch diameter in my garage and a rivet forge setup under but now i modified the forge and now get a firepot forge but now i plan to build a side draft Hood or super sucker 

does i can build something that Will perform well only with a 6 Inch?

hope you understand my english lol

Welcome to IFI, Pboucher. If you haven’t yet, please READ THIS FIRST!!!

Your question has been discussed here many times before, so I would suggest going back and reading over those discussions. The short answer is that 6” is much too small for a forge chimney; you need at least 10”, and 12” is definitely preferred. The side draft/ Super Sucker idea is a good one, though. 

As JHCC said, at least 10”, and 12” is definitely preferred.

Any chimney requires the same amount of fresh air coming into the shop that is being exhausted up the chimney. 

mine is 6" and it goes near horizontal for over 6' then up over 10', at the bottom of the bend I have added a venturi with surplus air from the blower, it works

may get some pix tommorrow

If my chimney is straight 15 feet and right over my forge does a big dôme over is good too ?

there is a formula for open area to diameter so you will want to restrict the space between hood and forge

To put it another way, you want your hood to pull smoke out of the fire. The farther you put the hood from the fire, the more air it will pull out of the room and not from the fire. This means that the farther away you put the hood, the bigger you have to make it and the larger the flue will have to be.

Great thanks everyone ill try and let you Know how it goes after !

On 7/11/2018 at 5:16 AM, Pboutcher said:

i am new

Have you read this post yet? It will help with getting the best out of the forum. BTW welcome to IFI.

https://www.iforgeiron.com/topic/53873-read-this-first/