Propaganda Delivery Device, V2 Magnum, and 9MM Deep
Today we present a Black Friday edition of the DEFCAD Newsletter. Signups this weekend get 10% off annual subscription access to the full DEFCAD repository.
Black Lotus Coalition starts us off this week with The 9MM Deep: a printed project making use of a DIY family of cartridges with the same case dimensions as 9mm Luger, and intended to be fired from guns chambered in the same. The included documentation and design philosophy align with the developments present in our SAAMI specification archives. Ammunition development is an exciting and underappreciated subject in DIY Defense, and it's great to see BLC pushing the envelope.
We follow up the 9MM DEEP with Are We Cool Yet? and their next launcher design: The 37MM Propaganda Delivery Device. The PDD is a refinement of AWCY’s combined launcher designs in a sleek, standalone platform that includes a Capsule and Nosecone for use with any existing M781 or JP Rifled Projectiles. Send your favorite signals with a *personalized message*.
Rounding out this week we have the v2 T2 G19 Magnum by BluePandaPrints. BPP has improved a recent Halo Magnum design by Booligan and released a practically useful shell for the G19 platform. There would appear to be many possibilities to explore between baseline frames and fully functional PCC designs, and DEFCAD is pleased to host them all for you.
The ATF has been a constant source of news lately, and the stories are not slowing. In the past week they presented this Notification For Previously Exempted Special Explosive Devices which removes prior exemptions for certain Civilian devices under the heading of special explosive devices (SEDs) such as consumer grade flash bangs and smoke grenades. This is not itself a ban, but a forced licensure for anyone either selling or owning such devices. Continual reliance by executive agencies on claims regarding the common good in order to put forth what amounts to Law seems to be a tenuous position to hold in the courts and is a house of cards that must be blown away.
It appears that in the matter of Everytown for Gun Safety v. DEFCAD that default judgment has been entered against Freeman1337 by Judge Gardephe of the Southern District of New York. User Freeman1337 terminated. Given that Freeman did not attempt to defend himself or his files, let alone join in real common cause in a very clear battle, it is unsurprising that this is his lot.
The failed state of California also seems eager to continually humiliate itself as we can see in this recent move by the Los Angeles Sheriffs Office to “revoke” the concealed carry permit of a citizen, Vince Ricci, after he successfully defended his home from would-be robbers. The law is very clear about Ricci’s legal rights in this instance but the powers that be can’t have citizens actually use them. Instead he is subject to punishment for what amounts to “using his outdoor voice” on the protectors of the City of Angels.
Black Friday Deals are happening right now at GhostGuns.com! Be on the lookout for deals on PLA Pro Filament and Rail Kits. Enjoy 10-60% OFF select products and get PRINTING!!
Void 2023: Roses
DEFCAD is now hosting the next batch in the Void 2023 whisper series. Composed of silencer stl files made for use with 7.62, 300, Rimfire, 9mm, .223, and .40, with Roses pattern embossed on the outer wall. With all the developments happening legally and technically right now its always good to remember that additive manufacturing gives people an incredible plethora of options for customization and application. This Escher-esque aesthetic gives a strong geometric sense to the suppressors while not compromising the overall requirements for grips. Much like the holidays themselves, we at DEFCAD are always happy to see the next in series from Void3D and we hope that you take advantage of all that he provides for us.
Adhesion and Calibration
This is a continuation of a series covering the most relevant settings and considerations for 3DP as it relates to DIY Defense ranging from in-fill and printer selection to post processor settings and part treatment.
The last thing you want when you are going about 3D printing is to have your print totally fail or come out mangled after dozens of hours of printing. The most common causes of a print failure are usually having an unlevel print bed, the print bed / environment is not warm enough, print speed is too fast, or the print bed itself is dirty. Most of the time a print failure appears within the first printed layer and this usually related to adhesion (i.e. how well does the printed material stay in place after it has come out of the hot end).
No matter the printer you are working with there are some options to help prevent these issues that broadly fall into two strategies: (1) calibrating/caring for the print bed and (2) maintaining a constant and relatively high temperature within the workspace. In terms of caring for the print bed it is essential that it remains clean prior to any print. This can be done easily with a razor blade as long as you keep a shallow angle.
You need to remove all prior print material so that the first layer can be as close to the original bed as possible while making sure the layer height across the entire face is about the same. You can use a stick of glue or kapton tape to prepare the surface after cleaning for the best possible adhesion. When it comes to calibration most machines that are recommended for working with Nylon (the material of choice for DIY Defense in most circumstances) already have auto-leveling features but if you are using something like an Ender 3 consult our Quick Start Guide and be sure to experiment with many easier prints to get a good sense of how level your bed is.
Regarding properly heated environments CNC Kitchen explores the topic of heated chambers at great length. Essentially since the entire process involves the heating and cooling of a thermoplastic it is better to have an environment where the temperature is already close to the state change since it takes less energy, it can cool uniformly and there is less risk of layers decoupling. The better printers include a heated bed feature and an enclosure but both of these are quite easy to add-on to cheaper printer setups. Ensure that the bed is brought to temperature prior to print and that the temperature is at the manufacturer’s recommendation for the specific material.
Assuming that the overall build environment is reliable for consistent prints it is also recommended to pay close attention to both your first layer and support settings in your software. Due to the nature of printer geometry and movement the corners will often be blown out or curl up on the first print so make sure that your prints have a ‘brim’ or ‘raft’ setting that adds an outline of excess material to your print so that it has a better chance of adhering. Finally make sure that whichever secondary supports (printed material meant to be removed as post processing) can actually hold up a structure during a print since it is incredible difficult for a 3D printed to push material out into unsupported air and keep all the material in place.