Page 1 of 3 123 LastLast
Results 1 to 10 of 27

Thread: FOSSCAD: (Israel) AR-15 75-Round 5.56mm Drum Magazine

  1. #1
    Senior Member duce's Avatar
    Join Date
    Mar 2013
    Location
    intertubez
    Posts
    173

    Thumbs up FOSSCAD: (Israel) AR-15 75-Round 5.56mm Drum Magazine

    The (Israel) AR-15 75-Round 5.56mm Drum Magazine
    by nils

    CAD Files: (bayfiles) http://ln-s.net/A85b or (sendspace) http://ln-s.net/A87+
    Photo Album: http://imgur.com/a/bMWqO#0
    Retweet: https://twitter.com/fosscad/status/414613195601362944
    Reddit: http://www.reddit.com/r/Firearms/com...ble_ar15_drum/
    defcad search: http://tinyurl.com/npt9onf

    FINALLY ITS HERE! Named after the infamous Congressman Steve Israel, lover of guns and 3d printers (lulz), brought to you by the man, the magician of magazines, nils....

    The VERY FIRST (EVER) 3d printable AR-15 75 round drum magazine!!!!!

    YES WE DID! YES YOU CAN! This slab of awesome sauce is for your 3d printing enjoyment. Bring the gift of MOAR GUNS! to a loved one for the holidays with a 75 round magazine! I'm so excited Im rambling . This magazine was on the back burner for almost a year, we HAVE IT NOW, and its only gonna get better with time.

    PLEASE PLEASE PLEASE share your pics/videos/stories if you decide to test this wonderful bit of awesomeness out and I will love you forever. ON with some PICS!

    Ok this is just cool, everything in blue is something you can 3d print . That is, the WarFairy Hermes Zero, P-15 Stock, Angle grip and the first 3d printable ar15 drum magazine \o/


    OMG^ IT SO SEXY!!!


    The (easier to use) winder is included in this model, same as the AK magazine (The Yee).


    PURE DATALOVE!


    Does it fit on an 8inx8inx8in 3d printer (i.e., sd3)? HELL YESSSSSSS IT FITS ON A 8inx8inx8in 3D @)#(I$#ING PRINTER!!! WOO HOO! (I think Im gonna cry).

    I would like to thank Santa for coming through with my xmas wishes on this one, WE ARE FREAKING OUT, SO happy with this RADCAD AWEWSOME SAUCE ALL-CAPS inducing Magazine of joy. Here is a VERY short animation of the magazine being disassembled for those interested in printing.



    If you have any questions, suggestions or concerns please post them and have a MERRY Christmashanikaquanza, with love, from FOSSCAD!

    MOAR GUNS!
    Last edited by duce; 12-23-2013 at 04:12 AM.
    JOIN the Community IRC channel on OFTC http://ln-s.net/-fP+ | Tweet FOSSCADers in the IRC channel @fosscad http://twitter.com/fosscad | Get the Latest Megpack 4.6 (Tachikoma): http://ln-s.net/:5Sp | MOAR GUNS!

  2. #2
    Moderator
    Join Date
    Mar 2013
    Posts
    196
    Someone NEEDS to print this

  3. #3
    Senior Member duce's Avatar
    Join Date
    Mar 2013
    Location
    intertubez
    Posts
    173
    We definitely need someone to print this and document the experience. As noted above, it will fit on a standard 8x8x8 inch print bed so hopefully someone will give it a go. I would recommend you start out printing from the top down, and the smallest components first. see how things fit and report back...my 2 cents.
    JOIN the Community IRC channel on OFTC http://ln-s.net/-fP+ | Tweet FOSSCADers in the IRC channel @fosscad http://twitter.com/fosscad | Get the Latest Megpack 4.6 (Tachikoma): http://ln-s.net/:5Sp | MOAR GUNS!

  4. #4
    I'll give it a test, but that spindle has some horrible overhangs. I don't like to print with external support alone due to the roughness it leaves behind, but the internal voids at the hub will make removing support a royal pain and could have an actual functional impact. If I have time I'll see if I can split the spindle to print in support-less halves.

  5. #5
    Senior Member duce's Avatar
    Join Date
    Mar 2013
    Location
    intertubez
    Posts
    173
    Quote Originally Posted by S3V3NS View Post
    I'll give it a test, but that spindle has some horrible overhangs. I don't like to print with external support alone due to the roughness it leaves behind, but the internal voids at the hub will make removing support a royal pain and could have an actual functional impact. If I have time I'll see if I can split the spindle to print in support-less halves.
    FANTASTIC!

    S3V3NS, here is a (VERY) short animation showing how to disassemble the magazine. I also added it in the post above.
    Last edited by duce; 12-22-2013 at 07:02 PM.
    JOIN the Community IRC channel on OFTC http://ln-s.net/-fP+ | Tweet FOSSCADers in the IRC channel @fosscad http://twitter.com/fosscad | Get the Latest Megpack 4.6 (Tachikoma): http://ln-s.net/:5Sp | MOAR GUNS!

  6. #6
    This looks REALLY REALLY cool! Congrats on the drum mag!

  7. #7
    Administrator
    Join Date
    Jul 2013
    Location
    Bay Area
    Posts
    90
    I love the enthusiasm, had me laughing throughout the post.
    Everything you experience in life is thought, and the beauty of that and the glory of this is that thought is yours to do anything you want.

  8. #8
    http://www.thetruthaboutguns.com/201...-ar-15-rifles/

    No such thing as bad publicity, and we might even get a few testers!

  9. #9
    Senior Member duce's Avatar
    Join Date
    Mar 2013
    Location
    intertubez
    Posts
    173
    Quote Originally Posted by S3V3NS View Post
    I'll give it a test, but that spindle has some horrible overhangs. I don't like to print with external support alone due to the roughness it leaves behind, but the internal voids at the hub will make removing support a royal pain and could have an actual functional impact. If I have time I'll see if I can split the spindle to print in support-less halves.
    S3V3NS,

    CAD master Have Blue has graciously split the spindle (the yellow part in the picture below) for all to enjoy (and to make printing it easier). The idea for those who do not follow is that you print the part in two pieces and then glue it together using MEK, Weld-On #3 or your preferred plastic adhesive.
    CAD Files: http://ln-s.net/A9G8

    #### Description
    The spindle is split, with the inside hollowed, and registration holes have been added all around. Use a short piece of 3mm or 1.75mm filament in the holes to align the halves. The above CAD files include sldprt, igs, step and stl files.

    Last edited by duce; 12-23-2013 at 10:16 AM.
    JOIN the Community IRC channel on OFTC http://ln-s.net/-fP+ | Tweet FOSSCADers in the IRC channel @fosscad http://twitter.com/fosscad | Get the Latest Megpack 4.6 (Tachikoma): http://ln-s.net/:5Sp | MOAR GUNS!

  10. #10
    First off, I want to thank HaveBlue for fixing up the spindle.

    Secondly, I appreciate the enthusiasm, but I want to emphasize that this is model is v0.1 (i.e. alpha). There will be much work between here and an easily-printable, reliable drum.

    Third, thank you S3V3NS for offering to do a test print. If you need any help, feel free to ask.

    Finally, few notes:

    * The drum body has a radius of ~7.5", so it definitely will fit within an 8"x8" build envelope
    * The follower needs work. Currently, it is not long enough to feed every round through the magazine body (this is because the Cuomo mag adapter must be very long to cope with the deep magwell of the AR-15)
    * The drum should fit 5.45mm cartridges, if you print it slightly larger (i.e. 105%). Unfortunately, we don't currently have an AK-74 magazine model to create a drum adapter.
    * Both springs (torque spring and key spring) are only in the model as a reference. While the key spring should be easy to source (a simple compression spring), the torque spring will be more difficult.

    More details on the torque spring:

    A starter spring for a lawnmower/chainsaw is probably our best bet; both cheap and readily available. Unfortunately, I'm not sure how much force is required for the drum to feed reliably, nor am I sure how much force starter springs provide.

    Right now, the torque spring "chamber" is a cylinder 10mm tall, with a radius of 45mm. This will change to accommodate whichever spring works best.

    Here is a good example of the type of spring I'm referring to:
    http://www.amazon.com/NACHMAN-ARCTIC...dp/B008Y2961K/
    or search for "starter spring"


    As always, questions/comments are welcome!

Tags for this Thread

Posting Permissions

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