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About eseemann

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    Huntsville Al

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  1. eseemann

    Bronze knife casting

    Copper + Arsenic is called arsenical bronze and as far as I know was once of the first types of bronze. A good copper/tin bronze can be harder than wrought iron or (I guess) very low carbon mild steel. The problem in the Bronze Age was that a given Kingdom might have copper mines but not many tin mines. Iron was not a hard (or I have read in history books called not a strong) as good bronze BUT if you found iron ore you did not need another metal like tin. As far as I know all bronze items start as a casting and then can be work hardened after that. Also the reason you don't find many old broken bronze swords at Bronze Age sites is a broken bronze anything could be re-melted and re-cast.
  2. eseemann

    used lawn mower blades

    I have a bunch of new blades I picked up on clearance at WalMart so these would not have the had the very hard life of a used blade. I almost want to take one and harden it just to see how brittle it gets. I would think these would be good for large bush knives or machetes. In these cases you need a blade that can bounce back from things but you should not expect it to hold a razor edge. I have some used bush hog blades like you see the highway crews use. I would think these blades a maze of micro fractures and metal fatigue.
  3. Never mind, I did not know Chromium had such a high melting point. I (incorrectly) assumed that some Chromium could out-gas. given the fact that it melts (from what I have seen) about 1,000 degrees Fahrenheit hotter than steel I see that I did not know what I was talking about.
  4. Steve, Thanks for the info. I guess the alloy is only a big risk if you try and melt the steel. Mo lib de num. I call it Molly also. thanks
  5. Good Morning All, I have been watching some videos on what must be the Darwin Comedy network A.K.A YouTube and I see people modifying air punches and chisels I wonder how much hexavalent chromium they are being exposed to. I know that there are small hand rivet tool sets that may be for hot rivets but a good number of the run of the mill air tooling seems to be chrome molybdenum steel. I was watching a video where the guy from Christ Centered Ironworks was turning a chisel in to a ball end tool once he got it up to forging heat. I have read on IFI that heating up a vanadium chrome wrench to forging temp is at best a VERY bad idea so I figured that was also true for chrome molybdenum steel. (Off topic, does anyone else here have trouble pronouncing the word "molybdenum"?) Please let me know what you think because if I am wrong I would like to know since it seems like a neat way to get some work done. If I am correct in thinking this might be a bad idea I figure you can take an air tool and cut off the tool end attach a "working end" that is a less toxic steel like 1080 or 5160. Thanks again and please remind people that just because it worked on YouTube falls in to the same bucket as "I saw it on HG TV so we should be able to do it". Ernest
  6. eseemann

    Sam Stoner tire hammer

    That might be the super-duty option and may test out at 3+ HP.
  7. eseemann

    Show me your anvil

    You ain't kidding, that is NEAT!!!
  8. eseemann

    Crazy thought for the day, tape measure-mascus?

    A guy I met at an SCA event knew a guy that serviced street sweepers and got his hands on a bunch of steel bristles. He used them for a demo of full hard vs full soft. The full hard snapped like glass and the full soft acted like normal wire.
  9. eseemann

    Crazy thought for the day, tape measure-mascus?

    The problem is I drive past one every day! Must get more lights!!!!
  10. Good Morning All, I have been looking at people doing Harbor Freight challenges like how many free LED lights that look like light switches they can get in a month and one guy posted a photo with a box full of "free with any purchase" items including tape measures. I figure that HF tape measures would be the cheapest steel you can get and still be spring steel but they would still be some kind of spring steel. I wondered if anyone has sanded or sand blasted a HF tape measure tape and added it to a pattern weld just for the heck of it. I know you would need a bunch of them since the tape is very thin but I thought I would see if anyone has done this in the past.
  11. eseemann

    matching pump and cylinder pressures

    Thanks for the info, I (sort of) understand that you on get the top of your power curve when the (in my case) air over hydraulic jack makes contact with the steel and is (for lack of a better term) straining against the top die.
  12. eseemann

    Getting my "T-Burner" tuned

    BM and Frosty, I think I have it up too high and am wasting gas at this point. I think I can get it as low at 5 to 10 PSI before it starts sounding like a V-1 Buzzbomb. I can always take the bell off and see what that does as well. thanks Ernest
  13. eseemann

    Getting my "T-Burner" tuned

    Good Evening from Sunny but not warm Alabama. I have installed my 1" T-Burner in what I call the forge with a face only a mother could love. These images are using a .045 ( I think) MIG tip at around 20 psi with a 1" pipe and 1 1/4" bell on the end. To my not-very-good-at-judging-this-eye the blue cone looks less solid then an oxidizing flame and maybe between oxidizing and neutral. Please let me know what you think since I am rubbish at trying to figure this out for my self. Ernest
  14. That makes me think of the truck crash in the Matrix and the use of thermite to weld RR track. I know thermite is not an explosive so I guess it would fall under fire. Ernest