Reference Models and Black History
February 28, 2025
New Release
DIY PRINTABLE ACCESSORIES

A long newsletter for a short February, which saw a return to the bread and butter of DIY Defense: Accessories.
CadDesignSolutions has released some fairly simple, yet obviously necessary, projects starting with the Universal Optic Mount for Glock, which attaches to a normal dovetail rear sight mount and offers a variety of patterns for trying out or using your pistol-rated optic systems. No need to RMR when you have a 3D Printer. Another project is a Rifle Stand for the AR Platform which is unusually sharp and capable, well worth the filament.
While PLA+ remains the most reliable thermoplastic for development, we have a few instances of TPU shining through, such as with this Mag Pull for 9mm PMags by RG3D. Its great to see development of the subtle applications that make the actual use of these platforms much more enjoyable.
UPDATE
150K SUBSCRIBERS

The DEFCAD newsletter has been popular for over five years, and this month surpassed 150,000 active subscribers.
The list and its audience are unique, representing much wider segments of readers than those found in the traditional gun news and commercial lists. And for good reason. DEFCAD's historical reach and dominance are accelerating. Ours is the only platform litigating access to the newest part of the newest category of Second Amendment activity.
The DEFCAD editors are wise as serpents, and innocent as doves. We will show you signs and wonders in 2025.
News
BLACK HISTORY MONTH

If the ritual cornerstone of the first church of 3D guns is JStark, then his papal successor is a small-time civil rights lawyer from Florida named Matthew Larosiere. Before he was the first American to copyright a firearm, Larosiere supplied the The Gatalog with the legal theories and hard commercial edge needed to sustain its administrative costs. During Covid he shrewdly painted himself into 3D2A history as one of JStark’s mentors and, soon enough, began to directly employ its ministers.
His first full time employee to this end was John Elik, an Illinois man identified by The New York Times as “IvantheTroll,” one of JStark’s earliest collaborators, and the most important American promoter of the FGC-9. An employee by temperament, Elik enjoyed Larosiere more for his frantic personality than his legalist message, which could often admit of compromise. Together they effected a translation of Stark’s message (urgent, but politically raw) that would be more legible, if not more pleasing, to American audiences.
A bible-believing evangelical and registered Republican, Larosiere has established himself on YouTube as a kind of gun law mythbuster with a will to expertise. Though DC think tanks and law firms like Cooper and Kirk were responsible for the landmark Second Amendment decisions of Heller and Bruen, respectively, Larosiere has successfully recast these expensive victories on social media as proof of the moral failures and social excesses of the larger American gun culture. With just $400, so the story goes, Larosiere himself secured a preliminary injunction against the federal government’s pistol brace rule in 2023. No national groups needed. “I fight because I love freedom and my fellow man,” said Larosiere then. “Not for a dollar or for a bunny.”
Measured against his acts, all the fundraising and lawsuits by all the country’s gun rights groups have been “Fuddbusted,” and we meet the Second Amendment’s Savonarola. With the master frame of opposing commercial gun culture in commercial terms, and by making the moral case for 3D gun files as property, Larosiere has made major contributions to 3D2A, The Gatalog, and American intellectual property law. He walked into great litigation as other men walk into traffic, and he's truly earned his reputation as "the 3D2A lawyer who is keeping all of us safe."
Sponsor
OPERATION BLACKOUT

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Certainly within the next 48 hours.
If you or your loved ones don’t own a gas mask, or the 4 essential items listed on this page, I suggest you watch this presentation, make a list of these items, then drive down to your local hardware store to pick them up.
Make haste. Time is of the essence.
This event could unfold in 48 hours or less.
Development
REFERENCE MODELS

A recent development in the DIY Defense Space has been the categorizing and release of full parametric reference assemblies. There are thousands and thousands of gun files on the internet but relatively few are actually worth working from, or are capable of being relied upon for future developments.
The tip of the spear in recent reference model efforts has been user ReferenceModels, who has been busy putting together and filtering the firearm releases over the past ten years that have long been deleted as well as full assembled 3DP projects for posterity. The first of these is the ArmaLite AR-7 Survival Rifle, which is a classic AR platform firearm but is rarely seen anywhere on the internet but the more relevant for development would be the Ruger 1022 Carbine Model which is a tried and tested development platform.
Hearts and Minds recently deployed a full Gen 3 G19 assembly for the DD19 frame , which takes earlier developments on slide reverse engineering and freshly modelled most of the missing components. Ideally such full reverse engineer and assembly projects would be the norm for the maturation of DIY Defense 80% projects.
Video
HOW TO MAKE YOUR OWN CRUCIBLES

We have been following ShakeTheFuture 's series on using microwaves as a kiln for casting iron using FDM/Silicon Carbide Molds for a few months. With a dremel and some patience this is an incredible procedure for making components that really should be made out of metal for firearm usage. This particular video goes over the creation of a crucible for capturing and pouring the liquid iron once the cast and kiln have been produced. The video goes over the step by step instructions as well as has various commentaries on hardening for the crucible itself.