PBB how to bend an HK flat
Page 1 of 4 1234 LastLast
Results 1 to 10 of 38

Thread: PBB how to bend an HK flat

  1. #1
    Gunco Veteran panaceabeachbum's Avatar
    Join Date
    Dec 2005
    Posts
    1,071
    Feedback Score
    7 (100%)

    Default PBB how to bend an HK flat

    Just bent flat into a usable receiver

  2. #2
    Gunco Veteran panaceabeachbum's Avatar
    Join Date
    Dec 2005
    Posts
    1,071
    Feedback Score
    7 (100%)

    Default

    Here are a few pics, the first pics shows the end veiw of the "flat" , after comparing this to another stripped rec it appears the cocking tube portion is the only bend left to form, and if you look closely you will see three short portions of the tube have alredy been partialy formed.





    Basicly athe bending of this flat is much like bending an ak flat, I started with the jaws of the vise about 1.5" apart (similar to the top of the female ak die) . I ran a peice of 3/4" drill rod down the center of the flat and centered it over the opening in the vise and proceded to tighten the two clamps on the ends which quickly begins forming the shell, I took a peice of aluminum scrap an a hammer and hit the center of the drill rod a few times to insure the middle was bending properly. and tightened the vice a little as I went and here are the results






    somewhere in the process of tightening the vise the top of the cocking tube will start to pull away from the 3/4" rod slightly and its time to change the setup slightly, What I did was put a peice of 3/4" sqaure stock in the bottom of the vise and the 3/4" rod thru the receiver and used the clamps to pull the rod and rec down snugly against the 3/4" sqaure. I then took two peices of 3/16" drill rod on either side of the cocking tube in the bend where it transitions from small to large and tightened the whole mess up in the vise . Also tapped up and down the length of 3/4" rod with aluminum scrap and a ball peen hammer . These pics should make it clear.




  3. #3
    Administrator sniper69's Avatar
    Join Date
    Feb 2004
    Location
    Was Germany, now Ohio
    Posts
    7,143
    Feedback Score
    43 (100%)

    Default

    Looks great! Out of curiousity who makes the flats?
    "To show you how radical I am, I want carjackers dead. I want rapists dead. I want burglars dead. I want child molesters dead. I want the bad guys dead. No court case. No parole. No early release. I want 'em dead. Get a gun and when they attack you, shoot 'em."
    Ted Nugent - speaking at the NRA convention April 17, 2005

  4. Remove Advertisements
    Gunco.net
    Advertisements
     

  5. #4
    Gunco Regular 3/325's Avatar
    Join Date
    Dec 2004
    Location
    Arizona
    Posts
    429
    Feedback Score
    1 (100%)

    Default

    Very nice!!

  6. #5
    Gunco Veteran pjm204's Avatar
    Join Date
    Jan 2006
    Location
    Idaho
    Posts
    1,591
    Feedback Score
    3 (100%)

    Default

    are those HK original flats or SW? Is there any secret stash of these flats that I could get the intel on? I've seen a couple for sale but I'm not paying what they're asking. I want a G3 one pretty badly though

  7. #6
    Gunco Junkie robdog's Avatar
    Join Date
    Dec 2005
    Location
    NC
    Posts
    542
    Feedback Score
    7 (100%)

    Default

    I read that this is what is used to make the sw weapons. They bend there own flats. I am sure they are out there somewhere, no one wants to give up where there source is though.
    Some people are like Slinkies. Not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs.

  8. #7
    Gunco Veteran panaceabeachbum's Avatar
    Join Date
    Dec 2005
    Posts
    1,071
    Feedback Score
    7 (100%)

    Default

    no secret, if I remember correctly from the other thread Todd from SW had a stack of these and the g3 flats that were purchased years ago to reverse engineer their stamping dies from when they went from cast to stamped. I was told they found these while moving right before the sar show and were selling them at SAR . I emailed SW as soon as I saw the post here on gunco and was sent a link to the misc for sale thread over on SW's forum (hk54) and followed the ordering procedures spelled out in the thread and about 2 weeks later they were sitting on the doorstep, the thread has been deleted and when I called last week I was told all the flats had sold, they refunded my money on the g3 flats and some of the other stuff. The one on gunbroker was at $87 with no bids last time I looked , I am building an sp89 type pistol with one of mine

  9. #8
    Gunco Veteran panaceabeachbum's Avatar
    Join Date
    Dec 2005
    Posts
    1,071
    Feedback Score
    7 (100%)

    Default

    I forgot to mention these are def not SW flats even though they came from SW, The add suggested they were HK and one of the guys on the hkpro forum who has one says its an FMP stamping. I have compared to both my HK and SW and its def not an SW , if they are not from HK they are def made on the same tooling as there are numerous details of the stamping that look identical

  10. #9
    GuncoHolic BigAl's Avatar
    Join Date
    Apr 2004
    Posts
    2,038
    Feedback Score
    12 (100%)

    Default

    my SW G3 receiver is a converted FA military receiver...

  11. #10
    GuncoHolic Sprat's Avatar
    Join Date
    Feb 2005
    Location
    Florida
    Posts
    4,537
    Feedback Score
    5 (100%)

    Default

    yes I agree nice job, and to all the detracters who said this could not be done/or that these flats were so hard too get here's a great post for you. pictures and all

    I am learning more about some of the posters here and their skill, then I am about building

    PBB has bent this flat with simple tools in his shop, in essence the same technic as forming stg44/mp-44 or HK style recievers

    great post

Page 1 of 4 1234 LastLast

Search tags for this page

There are currently no search engine referrals.
Click on a term to search our site for related topics.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •