Hi! I'm still kind of a newbie at this, I started forging this summer, outside, and now winter is approaching and I am thinking about setting up shop indoors. I've got an old barn at my disposal, that actually was used as a blacksmiths shop some 50 years ago, but my grandfather removed the chimney and everything else to use it to store his cars. It would be nice to have a chimney but since it was removed several years ago that is not an option, so I was thinking about the side-draft chimney and looked at Hofis blueprints. There's a bit of draft from the windows, and also from the door, could this be a problem or is it just a good thing? Also, I have got the square tunnel, what bothers me is the pipes he uses, I can get my hands on 6inch pipes but anything bigger than that seems to be pretty hard to find here in Sweden, atleast at a decent price. Will the side draft work with such a small pipe or do I need a wider one? The barn is roughly 6x5m, so 30m2, almost 100squarefeet If I am correct.