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Showing content with the highest reputation on 12/10/2018 in all areas

  1. 1 point
    Had a KS-12 in the shop with receiver/carrier alignment issues, and although the fit and finish is generally much better than the Russian export models, KS-12s clearly aren't immune to these issues. Lynx seems to attempt to address cycling issues with generally weaker springs, a blackjack type recoil buffer at the rear of the receiver, and a couple of extra gas settings. Once again it looks like yet another manufacturer is applying band-aids and Appalachian engineering to address problems inherent in the engineering and assembly issues copied from the originals. Receiver alignment is definitely something we always look at when a gun comes in for work. One of the the other issues we commonly see is fitment geometry. The guns we see often have a combination of issues when they come in the door, and have often been previously 'worked on ', so along with the inherent issues present in many factory guns, we also often have to address issues created by previous aftermarket work. I'm sure you get your fair share of these guns as well When I started doing this a decade ago, and I' know the same is true of you, I came to gunsmithing with a background as a master craftsman. Custom pool builder, or custom jeweler - that's not a bad place to start.
  2. 1 point
    You're right. However, I have limits just like anyone else. I needed to hear that and I sincerely appreciate it.
  3. 1 point
    Evl, why you're letting a troll bother you I can't figure out. That's outta character for you.
  4. 1 point
    "ive had -2-3 russian shotguns over the years that would run birdshot without futziing around. i shoulda kept 2 of them. they were just so buttery smooth! and light recoiling. not sure what made those guns so perfect. i guess they were just perfectly in sync". So true! The biggest issue with Russian shotguns and their many recent clones has always been that the way the parts fit and work together in the real world is often very different than the workings the engineers envisioned when they designed these guns. What is baffling is that with nearly every clone produced, regardless of origin, the defects which cause common malfunctions are precisely copied from whatever sample the copier happens to have in hand, and that on the corporate side no apparent effort goes in to analyzing and engineering a better product. Generally speaking, one comes away with the impression that If they're actually paying engineers, they're paying them way too much, and they'd be much better off hiring guys who actually understand how to make these systems perform in the real world. Pretty much across the board, regardless of the source, out of the box, most AK shotguns will run high brass reasonably well, fewer guns will run low brass reasonably well, and some guns won't run anything well. Once in a while, when the stars are in divine alignment, an AK shotgun right out of the box will run absolutely everything beautifully. As Salty has opined, when one is lucky enough to get one these. its a "keeper". .
  5. 1 point
    Now that is cutting to the chase, yeah have seen some of those old steel gas cylinders used for bells and they work surprisingly well due to the quality of materials. Grandma had one to call in the men folk from the field for lunch and supper, shows in some old pictures but was gone by the time I landed on the planet.
  6. 1 point
    I used to work on elevators, and sometimes had to have large brass ring gears made. I found that spin casting made the best ring gears. Like a bell, voids and uneven flows make bad gears. You could make a mold spinner from an old axle end with a wheel on it, and spin it with a belt and slow speed motor. Good luck to you, wear leathers and a full face mask - and the mold MUST be heat dried, as the SMALLEST bit of moisture WILL cause an EXPLOSION. That was the first thing I was taught when learning to pour babbit bearings.
  7. 1 point
    I've done casting of various things. IMO practice on smaller castings first. Get a lot of green sand. Purify your metals a bunch. Have way more melt than you need. Bells are particular for needing to not have voids. I think one of those vibrators that they use for cement, which have basically a sawzall body as the motor could help a lot with doing large castings. Also preheating your mold. The real tricky thing with large castings is having enough thermal mass that all the metal can flow in, fill out all the detail, and out the vents and the bubbles get out before the metal starts to thicken and solidify. You could talk to forum member "salt" he was doing some art castings kinda along the lines. You aren't going to get a good casting on your first try most likely. You are going to want about 1/3 more metal than your piece, and that's not counting for slag loss while you melt the metal down and purify it. You might look into aluminum bronze. gun brass is good brass for the purpose, but you are going to want to clean it as thoroughly as possible. and crush it. That will speed up melt time and reduce impurities.