Hedgeop Posted April 1, 2011 Share Posted April 1, 2011 So I have a backyard forge I built into the ground, and It just wont get hot! I use a one-horsepower blower and it still won't get hot. Any ideas? Quote Link to comment Share on other sites More sharing options...
Dodge Posted April 1, 2011 Share Posted April 1, 2011 So I have a backyard forge I built into the ground, and It just wont get hot! I use a one-horsepower blower and it still won't get hot. Any ideas? What are you using for fuel? How many CFM is the blower? Got any pics? Quote Link to comment Share on other sites More sharing options...
ThomasPowers Posted April 1, 2011 Share Posted April 1, 2011 What Fuel? What are you using for a tuyere? Are you putting the air in at the bottom of the hole? Since a blowdryer puts out too much air for a typical forge; are you putting too much air into the system? DETAILS! So far you have said "I have a car, it doesn't run---what's wrong with it?" Quote Link to comment Share on other sites More sharing options...
arftist Posted April 2, 2011 Share Posted April 2, 2011 A picture is worth a thousand words. Quote Link to comment Share on other sites More sharing options...
CurlyGeorge Posted April 2, 2011 Share Posted April 2, 2011 If you're in North Dakota, or similar, The melting snow might be killing the bottom of the fire. Welcome to IFI. Give more details and you can be sure to get the help that you are looking for. Enjoy the site. :) Quote Link to comment Share on other sites More sharing options...
evfreek Posted April 3, 2011 Share Posted April 3, 2011 I have a ground forge with side blast tuyere. It is kind of finicky. It will generate a lot of sparks and ash and radiate a lot of heat and ash upwards, and suddenly hit a sweet spot and burn or melt the piece. Then, back again to too cold. I think it is something about this kind of configuration. I have found that when it is too cold, that is caused by the fire burning on top and radiating away all the heat. This is caused by too much air blast, and the coals are too cool at the bottom to burn, so the forge burns on top. This will not get hot. I have found that pulling a log or piece of sheet metal over the top gets it hotter quickly. Something about diffusing and diverting the air blast downwards. This can also be accomplished by tuning the air supply. Like I said, very finicky. With my design, it is easy to get off the sweet spot. But, there is no substitute for large pieces. If the piece fits (non architectural), it is much more preferable to put it in the gas forge. For small tweaks on large items, the oxy-fuel torch is the preferred tool. Like I said, very finicky. You learn to work around it. Quote Link to comment Share on other sites More sharing options...
Frank Turley Posted April 3, 2011 Share Posted April 3, 2011 You've gotta contain the fire size at the sides with fire bricks and/or wet coal. Quote Link to comment Share on other sites More sharing options...
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