3D printed 30 round AR mag

Discussion in 'Build It Yourself' started by sharky47, Jan 11, 2013.

  1. sharky47 Active Member

    Member Since:
    Nov 1, 2012
    Message Count:
    162
    Had dinner with Cody and some reporters from Vice Magazine - who I am generally a big fan of. Awesome people and VERY open minded, not anti-gun at all. The main reporter fired her first gun that day with Cody and loved it! Had a great time at dinner and talking with them.


    3dprintedmag.jpg



    First high-cap 3D printed mag that we know of finished printing last night. Still have to test and probably make changes, but the genie's out of the bottle......
  2. watchdog Member

    Member Since:
    Dec 29, 2012
    Message Count:
    45
    Cool, do you think it will hold up? Is the polymer strong enough?
  3. wood chucker Moderator

    Member Since:
    Dec 19, 2012
    Message Count:
    1,593
    The possibilities that 3D can bring to the investment casting industry are pretty exciting.

    No need to spend mega bucks for a master die to make the wax pattern(s) just print them.
    You could skip the master pattern too and just print from the drawing.
    Patterns currently to difficult to mould could be printed with ease.
    Short runs or single parts could become much more affordable.



    Investment casting
    https://en.wikipedia.org/wiki/Investment_casting
  4. sharky47 Active Member

    Member Since:
    Nov 1, 2012
    Message Count:
    162
    The material seemed to hold up - at least for the day of testing. Seems geometry was the enemy this time around.

    I am going to see if Cody can print me a 10-15 round mag once we get the geometry established - so I can test them with the MVP.

    Initial notes/pics can be found here:

    http://defdist.tumblr.com/post/40315167419/defdist-ar-hicap-mag-part-i
  5. wood chucker Moderator

    Member Since:
    Dec 19, 2012
    Message Count:
    1,593
    Has anyone combined laser scaning with 3D printing yet ?
  6. sharky47 Active Member

    Member Since:
    Nov 1, 2012
    Message Count:
    162
    Yes, the scanning tech is very important to the printer project and will force an adult conversion on IP as we know it.

    Here is printable mag v2.0 - in full auto! This demonstrates why "they" will lose, first mag was a failure, the next day a new one had been designed/made and it worked in an M16.

    Dinosaurs cannot deal with this.

    Watch the video until the very end, you will laugh out loud - I promise......

    wood chucker likes this.
  7. wood chucker Moderator

    Member Since:
    Dec 19, 2012
    Message Count:
    1,593
    Laugh I did. ;)
  8. watchdog Member

    Member Since:
    Dec 29, 2012
    Message Count:
    45
    Wow, it even held up to FA fire. I was surprised by that.
  9. sharky47 Active Member

    Member Since:
    Nov 1, 2012
    Message Count:
    162
    Here is the initial write-up.

    Just hit infowars - http://www.prisonplanet.com/breakin...nes-now-available-for-download-seriously.html



    So, Saturday began with meeting back and comparing notes. Yesterday’s mag was fitted and cycled in different pre-grandfathered (just kidding, no one out here is going to do that) ARs. After Friday evening’s tests, we added graphite inside the mag body to make feeding as smooth as possible.
    [IMG]
    [IMG]
    [IMG]
    We ran the bolt on some dummy rounds and were again able to run 15 rounds through the piece, but the lips were cracked, and after breaking out some digital calipers we confirmed that the mag catch slot was just too high compared to other magazines. This was Friday’s major problem.
    Friday’s mag was seated 1.75 mm too low. Our design took features from another piece already hosted at DEFCAD, one by crank and mentioned previously. Friday, we were out on the range cutting on the Objet mag with keys and a knife to get the piece working. Saturday, we broke out an identical piece to the previous one printed in an epoxy-based SLA resin (qualities near identical to ABS) and set to making modifications again from scratch with better tools and measurements.
    Importantly, ***The current CAD files at DEFCAD do not yet reflect Saturday’s modifcations.*** Both DEFCAD AR mag IGS and STL files will be updated within 48 hours to reflect the changes we made this weekend.
    Those changes were essentially these:
    [IMG]
    We added 1.75 mm of material to the top of the mag catch slot, and subtracted the same amount from the bottom. The mag would now sit higher out of the well and into the chamber. The consequence is that now your feed lips come a bit too high and will be snagged by the bolt without some filing. So we took a flat file and gently lowered the lips until the bolt cleared without incident.
    Cylindrical filing was also still in order for the inside of the feed lips. The current IGS and STLs in both 10 and 30 round feature lips that are too angular and thick- and though thickness is understandable, the shape needs to taper more for a reliable feed up the ramp.
    [IMG]
    Here you see sanding of the piece after modifications were made to the mag catch slot.
    We introduced a little graphite into the new mag body, and after some cycling, we felt confident grabbing Friday’s follower and floor plate and heading back to the range for some failure testing.
    [IMG]
    The piece after running about 50 rounds through it. Over half of that on auto. That bolt is hot, and you can just see the plastic of the lips beginning to deform.
    Below is the best picture we’ve got to show how we also lowered the front follower rails. This may not be absolutely necessary, but we found it greatly helped the angle of the round out of the mag on Friday, and so we duplicated the modification with the new piece. This change will be included in the CAD updates.
    [IMG]
    The following images were taken after we fired every round of .223 we had with us. Final count was 85. Yes, that’s 5.56 in the background, but we were content with testing and opted not to use it. We only gave ourselves an hour of daylight at the range for proof of concept.
    [IMG]
    Our follower had some shaving done as well, and we will probably include a modified follower IGS file with the mag body update.
    [IMG]
    [IMG]
    The lips were starting to move up from the heat, but it would work well past 100 rounds.
    So back to the software. Stay tuned for some AK mag variants.
    Oh, and here’s something to keep the prohibitionists up.
    [IMG]
    *Clicks Print*
  10. sharky47 Active Member

    Member Since:
    Nov 1, 2012
    Message Count:
    162
    Got picked up on Hackaday - http://hackaday.com/2013/01/15/print-your-own-30-round-ar15-magazine/

    Gotta be honest, it's really exciting to have groups that I actually respect covering this story. Between Wired, Reason, Infowars, Vice (had dinner with them last thursday), Hackaday, etc.....it really makes me feel good!

    That piece of shit Israel has already started working on adding language to ban these mags - into Feinstein's bill. Like it'll matter, if 30 rounders are banned - their banned period - and on top of that, the info in on the internet........that ship has sailed.

    http://www.forbes.com/sites/andygre...ll-propose-ban-on-3d-printable-gun-magazines/

    http://israel.house.gov/index.php?option=com_content&task=view&id=1131&Itemid=73

    Pound sand asshole - servant of mammon indeed.



    Here is a recent outstanding interview with Alex Jones. That AR in the video has a printed lower that belongs to Cody - everything else is on loan from me. :)

  11. sharky47 Active Member

    Member Since:
    Nov 1, 2012
    Message Count:
    162
    Just got off the phone with Cody, he's outside of Dallas on his way to be interviewed by Glenn Beck....
  12. MechTech Moderator/ Damn Yankee

    Member Since:
    Aug 7, 2011
    Message Count:
    769
    Absolutely inspiring interview! A must watch!
  13. MechTech Moderator/ Damn Yankee

    Member Since:
    Aug 7, 2011
    Message Count:
    769
    Glenn Beck interview with Cody Wilson.
  14. sharky47 Active Member

    Member Since:
    Nov 1, 2012
    Message Count:
    162
  15. sharky47 Active Member

    Member Since:
    Nov 1, 2012
    Message Count:
    162
    There is a printed follower in my MVP :p

Share This Page