![]() ![]() I have tried 14 inch, 16 inch on the same side draft hood and they worked but anything larger started to reduce draft and not draw as well. ![]() 10 inch and 12 inch diameter chimneys are suggested for most forges, single blacksmith usage. ![]() I'm just thinking out loud.Ī lot of this depends on the size of the forge and how much fire you have in that forge. I guess it depends on how you arrange your hood. You might end up with a weak draft until that thing gets rolling. The heat of the flue gasses going up the stack is what causes it to rise, a pipe that large would draw in a lot of ambient air and the flue gasses could be cooled substantially as a result. It would take a long time to get the draft going through a pipe of that size. Bigger is generally better, but in my opinion 24" seems like it's a bit much. Does the draft improve at all if you open up a door? Granted you have probably already tried that since the shop is full of smoke.ħ" is a little small. The new building isn't allowing enough air to reenter the building to replace what is going up and out the flue. It is otherwise obstructed by it's surroundings (i.e. The stack is too short for the new building (it should extend roughly 4' (1.25m) - or more - above the peak/highest part of the roof) Do you have any pictures? I'm assuming your forge setup has stayed the same and the only thing that has changed is the move to a new workshop. If you are only having draft issues since you moved my mind immediately goes to 3 possible causes: ![]()
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