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Kopsis

@ Kopsis @forum.guncadindex.com

Posts
3
Comments
134
Joined
3 mo. ago

  • 22lr - Mostly Printed

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  • There are many printable G17 and G19 frames available that should work with the conversion slides. Only the frame itself is 3D printed, you then add a standard Glock lower parts kit and a set of metal frame rails (either from PY2A if you pick a PY2A-style frame, or from any of the vendors that sell FDMA-style rails for that type frame). The result will be the rough equivalent of an OEM G17 or G19 frame and should work with the Advantage Arms slide assembly and magazine.

    The G44 may be a different ballgame. Perhaps someone more familiar with that model can provide info.

  • Ill be your huckleberry - Franken 9

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  • Because Glock mags look ridiculous on a design like this 🙂

  • First time on Lemmy, obligatory DB post.

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  • Nice looking DB9!

    Fellow Boost user here. Be sure to check the "categories" list (bottom middle button) from time to time since it's easier for people to create new categories here than to create new subs on Reddit. Also remember that here it's cool to link directly to Odysee, or better yet, guncadindex to direct people to stuff you've released or used.

  • 10/22 Folding Stock

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  • Galileo R2, no. Take a look at the Chodin or chortex.

  • PC And Other NON-CF Filaments

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  • PC is not a good filament for anything that sees many stress cycles. It experiences something similar to metal fatigue where it gradually weakens with each cycle until it becomes too weak for the load and fails catastrophically.

    Many polymers experience this to a small degree, but with PC it's significantly more pronounced.

  • Remove Metadata

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  • STEP file metadata is in the "FILE_NAME" field within the "HEADER" section. It can include: name, time_stamp, author (name and address), organization, preprocessor_version, originating_system, and authorization (name and mailing address of the person who authorized the file). Most of those are rarely populated. Since STEP files are ASCII, you can open them in a text editor and set any of those fields to an empty string.

    Binary STL files contain an 80 byte header that could contain metadata. There's no specification for header contents, so apps can write anything they wish to that section. Nothing in the header is required, so to scrub the file, you could simply zero that section. You could do it manually using a hex editor, or automate it with a simple script. The following Python code will do that:

     
        
with open('mygat.stl', 'r+b') as f:
    f.write(bytes(80))

  • now you have a machine gun ho ho ho

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  • You can get Chazsel liner with NPT threads on the ends and then use an NPT to 1/2x28 adapter. I've also had success with the proto barrel design that simply epoxies in a 1/2x36 to 1/2x28 thread adapter (use a suppressor and alignment rod to ensure everything stays concentric while the epoxy cures).

  • DB22 Build Questions (1st time builder)

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  • DB22 Build Questions (1st time builder)

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  • You don't need an MAC 11 parts. The upper is going to be completely 3D printed and you'll just need to buy barrel liner for your chosen barrel solution and the CMMG-style bolt carrier group.

    I haven't tried Fl-Eggs DB22 TURD release but I did use the trip sled from that release with a Fudd Arms Super Safety and a Phoenix Design Works lower and that works great.

    PLA Pro is fine. Run it until something fails and then print in something more durable leveraging all your lessons-learned from the first build.

  • Fgc-9

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  • The grooves keep the pins from "walking" so you want them, but dimensions don't have to be precise. On the trigger pin the grooves should be just inside the receiver so the legs of the hammer spring can seat in the grooves to lock the pin in place. On the hammer pin the groove is dead center and a detent spring in the hammer locks it in. You'll see pins with all three grooves but that's just so they're interchangeable.

  • Fgc-9

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  • Hammer and trigger pins are nominally 0.154 inches. It's not too difficult to take a 4mm dowel, chuck it in a drill and spin it against a flat file to bring the diameter down 0.1mm.

  • Dumb question, g19

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  • As I recall, Marine Gun Builder had some good Polymer 80 build videos. Process for a printed frame is pretty much the same except you don't need a jig to drill the pin holes.

    If your print is reasonably accurate, you don't need drill bits. Just chuck the pin in your drill and spin it into the hole. Friction will reflow the polymer to exactly the right size.

    The other area where people have a lot of problems is trigger function. The Johnny Glock Functional Friday videos are a great resource for understanding how the Glock trigger system works.

  • Alright guys, let’s get this place popping! Now that Fosscadtoo is gonna we’re going to keep seeing this time after time.

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  • Voyager or MLEM on IOS, Voyager, Boost, or Summit for Android will give you a Reddit like GCI experience that's arguably better than Reddit's brain damaged mobile client.

  • Aves Rails and California AB1263

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  • Given that first class packages don't identify their contents and the state can't routinely examine USPS mail, I'm not sure how Cali thinks they can enforce it. But at the very least you could get Send-Cut-Send to laser cut rail blanks and use your own bending jigs to form them. The bending jig models are available on Odysee.

  • PWC9 and STEN Mags

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  • The creep tendency of PLA+ often leads to problems with magazines. Sten are particularly problematic since spacing of the feed lips when new leaves no margin. The only long term reliable Sten mags I've printed were PPA-CF and PET-CF. I suspect Siraya's new PET-GF would also work well.

  • PA6-CF Printing temperature

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  • Take other people's print temps with a grain of salt. Extruder thermistors aren't individually calibrated, different nozzle types have different heat transfer efficiency, and high volumetric rates reduce effective filament temperature due to reduced heating time.

    Start with the manufacture max and run some tests at elevated temperatures to see if it results in any improvement in layer adhesion. You don't need sophisticated test apparatus, just print some "snap sticks" and see if you can feel a difference breaking them.

  • First print with Siraya Tech PET-GF

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  • I think your HDT numbers are Fahrenheit. Siraya's datasheet says 122°C annealed (78°C without annealing). Impact strength isn't great and it's worse if you anneal it, but there's still plenty of stuff it can be used for.

  • First print with Siraya Tech PET-GF

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  • Looks good! I really don't have a need for PET-GF right now, but $34.29 with free shipping?! That's just too good to pass up.

  • DIY PCC Concept Project

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  • It's more than just scaling the bolt. Heavier bolt means heavier recoil springs. Heavier recoil springs means larger/stronger receiver. Magwell and magazines also have to change for each caliber. Magazine design is one of the most difficult parts of creating a self-loading firearm. It's easy to make one that functions; it's hard to make one that functions reliably (even when using an existing design as a reference). You can "cheat" and rely on commercial mags, but even then you'll usually have to tune the feed geometry since the behavior of a .45ACP cartridge is going to be radically different than something like a 5.7.

    There is a 9mm version of the Decker 380 in development right now and despite the cartridge itself being nearly identical just 2mm longer, nearly everything except the fire control system has had to change to some degree.