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I Forge Iron

Side draft ?


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On 4/20/2017 at 2:17 AM, turbo7 said:

Correct, the larger the flue size to fire opening ratio the better the draft.

Up to a certain point..  Then it becomes whether or not the area to length vs temperature comes in.. The industrial smith I know uses a 14X14"X 12'size..  I use a 12X12X15'..

 

If you use coke you can get away with a smaller size or height as the heat stays on for longer time..  I use a hand blower with soft coal so the on off on cycles can reek havoc if not designed properly..  There is no smoke shelf in my hood/stack design.. 

Here is a link to my design in action.. 

https://youtu.be/780yI_RMNRE

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Lester Beckman designed the original super sucker side draft unit. 

Super Sucker - click here

Super sucker is just a box with the chimney opening on the top, and the fire opening on one side. The fire opening is cut at an angle to act as both a roof and to get it closer to the fire.

Bottom is 12-1/2 x 10 inches

Back is 12-1/2 x 12-1/2 inches

Top is 12-1/2 x 15 inches

Legs are 3/16 x 1 inch

Front is constructed from 3/16 x 3 flat bar with a 10x10 opening

 

Chimney opening (12 inch diameter) is larger than the fire opening (10 x 10 inches) in area.

 

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