furby Posted December 11, 2008 Share Posted December 11, 2008 Hi-- I am trying to make a small forge for heat treating small wood chipper blades-- (1/4 X 1 X 4 inches in size)-- hardening and tempering these blades. I have read about the brake drum forges. last:) week I found this old cast iron water heater. how would that be for a small forge?? See photos. Thanks in advance for any comments!!! Quote Link to comment Share on other sites More sharing options...
Ice Czar Posted December 11, 2008 Share Posted December 11, 2008 (edited) thats a cool piece of cast iron there Welcome to the forums course its quite alot of thermal mass too you might find this of interestJapanese filemaker videos kindly translated by Ataru Maeda 1) Heat an iron red hot Heat a steel in high temperature and beat it to make up it's shape. 2) Annealing Inside a forge surrounded by heat insulator, heat this steel to 810 degree and spend 24 hours to cool it. Key point is to spend much time to cool it. 3) Grind Grind the surface of annealed steel. The color of this steel is black at now, so grind it's surface by using a tool called "TONBOSEN" with much strength. 4) Setting Fix a steel on a desk, and set it by using a cold chisel. 5) Tempering Heat a steel inside a hole called "TSUBO". Its diameter is about 10cm and melted lead is inside this hole. Then, take out a steel from TSUBO and sprinkle salt on it, then heat it once more. Enough heated, then take out a steel from TSUBO, and cool it down by soaking into water. Pay attention to a steel not to be warped. 6) Finishing Check a steel and wash it in acid and do rust-proof, then, it's finished. We make it about 50 in a day. as far as Ive been able to research the TSUBO refers to stoneware pots rather than a particular process or device (its hard to break different text barriers in searching, Kanji especially) that little door on the top of your boiler and the hardening and tempering of a small size just suddenly associated. (of course Lead (pb) is pretty toxic stuff especially if volatilized.) as far as using that as a forge Id like to see a better photo of the back (the tuyere and exhaust) and more photos of the boiler too. Edited December 12, 2008 by Ice Czar Quote Link to comment Share on other sites More sharing options...
dablacksmith Posted December 12, 2008 Share Posted December 12, 2008 that is too nice a casting to turn into a forge... ide use a old bbq before usin that...if you get that up to forgeing temp it might crack ..just my 2 cents worth.. what other scrap can you find even a old bucket can work in a pinch .. Quote Link to comment Share on other sites More sharing options...
BeaverDamForge Posted December 12, 2008 Share Posted December 12, 2008 that is too nice a casting to turn into a forge... ide use a old bbq before usin that...if you get that up to forgeing temp it might crack ..just my 2 cents worth.. what other scrap can you find even a old bucket can work in a pinch ..I'd agree with this... an old wheel rim or washtub lined with mud is cheap and easy enough. Set that (rare?) piece aside. Good Luck! Quote Link to comment Share on other sites More sharing options...
Lysdexik Posted December 12, 2008 Share Posted December 12, 2008 I'll take it off your hands, and send you a working drum forge minus airsource! Paul I'll even split the shipping......LOL 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.