kayakersteve Posted April 16, 2015 Share Posted April 16, 2015 Here's my forge I built. ~260 cm3 interior 2 burner forge. Entire forge lined with 2" kaowool and coated with refractory cement x 1/4",with 2 coats ITC100 on outermost layer. will get plumbed and test fire over weekend hopefully. needs to be able to weld billets the size shown. Quote Link to comment Share on other sites More sharing options...
Latticino Posted June 10, 2015 Share Posted June 10, 2015 Looks to me like a rather large billet for that size door opening. Does it have to go in on a diagonal? If tried by now, how did it work? I have built a similar sized gas furnace, but with only one burner and fired on natural gas. Feel like I struggle to get to welding temperature. Haven't tried a bullet in mine yet, but hope to in the future. Quote Link to comment Share on other sites More sharing options...
swedefiddle Posted June 10, 2015 Share Posted June 10, 2015 Might want to put a fire brick to act as a door, on the top horizontal part of your opening. Heat leaks out, UP. Feed your material under it.Look at Stumptown's Forge. The door raises, UP. Not slides sideways.Neil Quote Link to comment Share on other sites More sharing options...
timgunn1962 Posted June 10, 2015 Share Posted June 10, 2015 Looks to me like a rather large billet for that size door opening. Does it have to go in on a diagonal? If tried by now, how did it work? I have built a similar sized gas furnace, but with only one burner and fired on natural gas. Feel like I struggle to get to welding temperature. Haven't tried a bullet in mine yet, but hope to in the future. Natural gas is usually at low pressure (a few inches of water column), making it difficult to get high temperatures in Naturally-aspirated forges. Propane is easier because it is stored at high pressure and just needs regulating down to the pressure we want.For NG, a blown burner may be a better option. Quote Link to comment Share on other sites More sharing options...
Frosty Posted June 10, 2015 Share Posted June 10, 2015 I believe you got the volume wrong, 260cm3 is less than 16 cu/in. Yeah, I'm being picky but it matters.If those are 3/4" burners, even linears will bring that volume to melt your billet temperature easily. Sure they might need a little tuning but that's a LOT of burner for that volume forge.It'll weld no problem and you'll have to keep it turned way down.Just FYI:Natural gas has 1,030 BTU/cu/ftPropane has 2,500BTU/cu/ftButane has 3,200BTU/cu/ftGotta love Google. Frosty The Lucky. Quote Link to comment Share on other sites More sharing options...
kayakersteve Posted June 10, 2015 Author Share Posted June 10, 2015 FYI - I still use my coal forge for making my billets as I am better there. I use the propane for drawing out and heat treating right now I also changed out the burners to the ones shown here which are easier to tune and control. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.