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Found 3 results

  1. Hey guys. Just wondering if anyone has any idea on the metallurgical specifications on an L-shaped lug wrench or at least what is typical for them. I was helping a friend get rid of some garbage at one of his rental properties and came across an old lug wrench and thought it would be suitable to make a knife with. I did a spark test and it appears to high carbon steel. My guess is W-1 or some other kind of tool steel. I'm more curious than anything as to what they make these things out of but some insight into what this stuff is made of could help with an optimal temp range for heat treat. Thanks guys I will post pics of the knife!
  2. A mate of mine found this adjustable double ended spanner/wrench , it has no markings to show where or when it was made. The tool is about 10 inches long . It was found in the dust of an old closed down sawmill. The mill ran from around the 1930s - late 1980s. Does anyone have any idea of the age or who the maker may of been ? ?
  3. Hey all, It's been a little while. Been reading alot of the forum and books from the early 1900s. I'm considering making a 2 3/*" wrench made heavy enough to undo nuts on a large rock crusher at a quarry. The only source available is asking 200$ or more for it and I'm reasonably certain that I could make it for about half that and make it stronger, although heavier. The last wrench was a combo wrench and had a tooth on the open end broken off. I'm surprised that the box end didn't go first as thin as it was. The ring on the back will be made heavier and smoother (better for pulling), and the head on the open end heavier, and after I ask a few mor questions I may just make it a heavy box end if it will still serve it's purpose. My primary concerns are the type of steel to be used, and proper heat treating. Given it's (ab)use it will be under considerable stress hence why I'm forging it solid, keeping the metal as thick as possible and using fairly thick stock. I've been reading and it seems that alot of people use steel from old leaf springs such as 4130/4140/etc. I would prefer to use fresh steel as i would be more certain that it would not have any surprises from past abuses, and I think I'd have trouble finding 3/4" leaf springs anyway. Would 4130/4140 still be a good steel for a wrench of this size? I also imagine that the entire final product would need a fairly uniform springy temper to prevent everything from bending out of shape under these stresses. What would be a good method of arriving at this temper? A temp stick and a torch or Brittle harden and cook an hour at 700F or 800F (I can't think of anyone with a furnace), or just oil quench for a few seconds and draw temper from the inside? How would this best be done with a piece of steel this size?
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