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I Forge Iron

MattBower

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  1. Good tip on the hot cut, Rich. I never thought of that!
  2. Big forge with hard firebrick and a small burner. You need better insulation, plus a much smaller forge and/or a much bigger burner.
  3. Since the face of your largest hammer (largest one-handed hammer, anyway) probably isn't more than about 2.5" across the widest dimension, I'm not sure I see a real advantage to welding the pieces together side-by-side. A 6" wide face is mostly wasted unless you're doing a lot of work with a sledge, in which case you probably want a considerably heavier anvil, anyway. You would get more mass directly under the hammer -- and thus probably more benefit -- by stacking them on top of one another (with the 3" face as the top surface) and welding them up that way. I don't know if it's necessary to w
  4. I second what Dodge said. Charcoal doesn't need much air blast. If you're wearing yourself out cranking the blower for charcoal, something's off. EIther you're cranking way too hard, or something's wrong with the blower. Try slowing waaay down. You may find that it solves several problems. It's possible to force so much air into a fire that you blow all the heat away, just like blowing out a candle.
  5. That's interesting, because I grew up in northern Indiana (Elkhart County) and I don't throw in the extra "r" in words like wash. At least if I do, I'm not aware of it. I wonder if it may vary even within the state. I grew up calling soft drinks "pop," but around Indy they tend to call them all "coke," which is a term I associate with the east coast (although it's apparently popular on the left coast, too, and in a lot of big cities in between). lupiphile, nice tie-in! :)
  6. Well, that's Wayne's definition. I don't think I agree with it. But of course I don't like to use the term damascus at all, because it's confusing; it can mean several different things. I do say cable damascus, though, because I'm too lazy to come up with a better term that's as easy to say. :)
  7. I agree that experimentation is important. I didn't mean to suggest otherwise. But to borrow some terminology from my days as an artilleryman, a good reference book can save a lot of adjusting rounds. In other words, it can help you get in the right ballpark. Industry has come up with some fascinating ways to overcome the problem of getting from the furnace to the quenchant without losing heat. E.g., sometimes the quench tank is directly under the furnace. When the part is fully austenitized, the bottom of the furnace opens and dumps the charge straight into the quench bath. I'm not suggesti
  8. These are good questions. I am sure one of your professors can give you a theoretical answer to the time-to-100%-austenite question. (It's not just a function of the size of the piece. It's also a function of alloying elements. Highly alloyed steels convert to austenite slowly, which is why many of the high speed/air hardening tool steels require very long soaks at high temperatures for full hardening.) However, the practical answer to your first question is that smart metallurgists have already figured this stuff out and written it down for the rest of us. Walk over to your university library
  9. Come to think of it, I just realized we're talking about two separate things. You're talking about a design patent, Thomas. Yes, those are easy to get around -- so easy that they're hardly worth bothering with. Utility patents are a different story, and much more worthwhile. I assumed that's what he's going for. But maybe not.
  10. Eh, I don't think it really works that way as a legal matter, although it may depend how the patent application is written. The modern patents I've read have been written in extremely broad terms, probably to prevent attempts at that sort of thing. In fact, some of them have been written so broadly that, at least for me, it was hard to tell what the heck they were patenting! It was all very abstract.
  11. I look forward to reading the application. No offense intended, but I am skeptical about the usefulness part. I have yet to see any evidence that PW steel can do anything, mechanically, that monosteel can't do at least as well. As far as I'm concerned, PW is a decorative process -- which is not to say that I don't like it! But stuff happens. A guy over at Don Fogg's five or so years ago was playing around with making crucible steel using thermite, and ended up creating a new alloy with some unusual properties. With some help from a metallurgist and some other professionals, he ended up patenti
  12. Here is Dr. Feuerbach's list of papers from her academic homepage. At least some of them are available for download. Her dissertation and master's thesis are not included. http://hofstra.academia.edu/AnnFeuerbach/Papers I hope that helps.
  13. For some reason I can't see the photo. Is it still there? Rich, The Patent Office explains patentability as follows: In the language of the statute, any person who “invents or discovers any new and useful process, machine, manufacture, or composition of matter, or any new and useful improvement thereof, may obtain a patent,” subject to the conditions and requirements of the law. The word “process” is defined by law as a process, act or method, and primarily includes industrial or technical processes. The term “machine” used in the statute needs no explanation. The term “manufacture” refers
  14. Are you telling, or asking? If you want smaller quantities, several common roach poisons are 98%-99%% boric acid (and 1%-2% "inert ingredients"). Roach Prufe and Hot Shot Roach Killing Powder are two examples. You can buy them just about anywhere, and they're cheap.
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