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Thread: Very poor man's bend jig - lol

  1. #21
    Diss Member netpackrat's Avatar
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    4130 needs to be bent around at least a 1T radius, where T= the thickness of the material. Perfectly sharp corners are an invitation for cracking in service.
    Last edited by netpackrat; 06-03-2006 at 12:50 PM.

  2. #22
    Toj
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    Gunco Rookie Toj's Avatar
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    Grasshopper, Great jig! Especially for those who are too economically disadvantaged to buy a proper press and incapable of building or buy one of those heavy duty jigs. I've always figured if the Afgans can build an AK in their bicycle shops, I should be able to do it in my garage.

    Please provide more details/photos on how to bend the top rails using your jig.

  3. #23
    Gunco Regular tarawa's Avatar
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    Add this to the list of "easy flat bending jigs"...just think, a year ago there was none.
    gtbehary........ ak builder, hack machinist, nuclear worker and violin huckster!

  4. #24
    Gunco Regular sks_hunter's Avatar
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    way to go, dude... that's what I'm talkin about!
    more than one way to skin a cat
    Send Lawyers, Guns, and Money

  5. #25
    Death Ray Operator vulcan762's Avatar
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    That is just too freaking funny. Remember the "FIRST" bending jig? A Huge piece of welded steel the guy was trying to sell for $500 each!!!

    I now officially have no other excuses for not doing a flats build.

    ....Wheres my credit card.

    Great Job Hopper!!!!
    Visit http://www.WeaponsWorld.comfor the current ammunition sale prices!

  6. #26
    Gunco Regular sks_hunter's Avatar
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    going GREAT here, , thanks for asking, buddy.....
    I've been Crazy busy for the last couple of months with a new job, and trying to get my house spruced up to sell and relocate my family in the area of my new job.Hopefully I'll be back to my regular mischief here in the next couple of weeks.
    Send Lawyers, Guns, and Money

  7. #27
    Gunco Member immyowngod's Avatar
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    I built one of these this weekend. Piece of cake!
    I didnt however get the flat bent. I started hammering on it and figured the people in my aprtment complex wouldnt care too much for it.

  8. #28
    Gunco Member GreatMoose's Avatar
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    Sorry to resurrect an old topic, but I'm about to try this method and just would like a little clarification before I start beating on stuff. So,

    1) if I understand this right, there is bar sandwiched on the top and bottom of the flat, correct?

    2) To bend the sides, you position the sandwiched flat over the angle pieces, and hammer the exposed bar down into the angle brackets. How do you keep the flat stable during the first few hits?

    3) I'm really unclear on the top rails. how do you keep the flat bars near the top? Is it just held in by the tension of the angle pieces? Also, where do you hammer on this (I assume you don't hammer the flat)?

    Again, sorry for all the probably very stupid and obvious questions, but I'm having a hard time wrapping my brain stem around some of this. Thanks a heap!!

  9. #29
    Throbbing Member scheistermeister's Avatar
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    1) yes

    2) the bottom part of the sandwich would be inbetween the angle brackets

    3) i think what he did for the top rails was flip the angle bars over, move the bar stock up to the top of the flat and lock it in a vise, then hammer the rails over


  10. #30
    Gunco Member GreatMoose's Avatar
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    Great! Thanks!
    The only part I'm worried about (in part 2) is not getting the flat to go inside the angle parts straight. I know it's only a 1mm gap on each side, but it still bugs me.

    I wonder if getting a few more bolts and expanding the two bar stocks APART and then hammering the rails over would work. Hmmmm... May have to try that. That way, you could match the angle of the top of the receiver. (I realize the preceeding sentence probably made zero sense. I'll post a pic if it works.)

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