New York state lawmakers are considering a sweeping measure that would require all 3D printers sold or used within the state to incorporate technology capable of blocking the printing of firearms. The proposed legislation, embedded within the state’s 2026-2027 executive budget bill (S.9005 / A.10005), has sparked concern among digital rights advocates and the open-source hardware community, who argue the law is technically flawed, overly broad, and could stifle innovation and education. The core of the debate centers on the feasibility of reliably identifying firearm components within digital designs and the potential for unintended consequences impacting legitimate uses of 3D printing technology.
The bill mandates that 3D printers include “blocking technology” – essentially a firearms blueprint detection algorithm – that scans every print file before allowing it to proceed. If the algorithm flags a design as a potential firearm or component, the printer would be prohibited from completing the print. This requirement extends not only to commercially manufactured 3D printers but as well to those built from open-source designs and even CNC milling machines capable of creating similar objects. The legislation comes amid a growing national concern over “ghost guns”—unserialized, privately made firearms—which are increasingly turning up at crime scenes. According to data released by the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF), the number of suspected ghost guns recovered by law enforcement increased dramatically between 2017 and 2022, rising from 2,476 to over 19,000 according to ATF data.
However, critics argue that the proposed solution is fundamentally flawed. Adafruit Industries, an open-source hardware company, has been vocal in its opposition, outlining significant technical challenges in a recent blog post. “You cannot reliably detect firearms from geometry alone,” Adafruit stated, explaining that a detection algorithm would struggle to differentiate between legitimate objects and firearm components due to the shared geometric properties of many shapes. “A firearms blueprint detection algorithm would need to identify every possible firearm component from raw STL/GCODE files, while not flagging pipes, tubes, blocks, brackets, gears, or any of the millions of legitimate shapes that happen to share geometric properties with gun parts. This is a classification problem with enormous false positive and false negative rates.”
The Technical Hurdles of Firearms Detection
The challenge lies in the nature of 3D printing itself. Additive manufacturing builds objects layer by layer from digital designs, typically in STL or G-code format. These files contain geometric instructions, not explicit declarations of intent. Distinguishing between a harmless object and a potential weapon based solely on shape is a complex task, prone to errors. As Adafruit points out, a simple pipe or bracket could be misidentified as part of a firearm, leading to unnecessary restrictions on legitimate printing activities. This issue is compounded by the vast diversity of firearm designs and the potential for modifications and variations.
the bill’s scope extends to open-source firmware – the software that controls 3D printers – like Marlin, Klipper, and RepRap. These projects are typically maintained by volunteer communities with limited resources, making compliance with the new regulations a significant burden. The legislation also encompasses CNC milling machines, which, while capable of creating firearm components, are widely used in various manufacturing and hobbyist applications. Requiring these machines to incorporate the same scanning technology would impose substantial costs and potentially hinder their functionality. The Tom’s Hardware article highlights that the bill “mandates surveillance on every maker tool in the state, with penalties for sellers who have no control over post-sale use.”
Impact on Education, Innovation, and Small Businesses
The potential ramifications of the New York law extend beyond technical challenges. Educators and makerspaces rely heavily on 3D printers for hands-on learning and prototyping. Imposing restrictions on these tools could stifle creativity and limit access to valuable educational opportunities. Small businesses and hobbyists who use 3D printers for product development and personal projects could also face significant disruptions. The law’s broad scope raises concerns about chilling effects on innovation and the potential for unintended consequences across various sectors.
Adafruit suggests several amendments to address these concerns. They recommend exempting open-source firmware from the regulations, focusing instead on the intent to create firearms rather than attempting to police ambiguous shapes. They also advocate for limited liability for retailers, schools, and libraries, and the elimination of mandatory file scanning. “But the answer to misuse isn’t surveillance built into the tool itself,” Adafruit argues. “We don’t require table saws to scan wood for weapon shapes. We don’t require lathes to phone home before turning metal. We prosecute people who make illegal things, not people who own tools.”
A Pattern of Restrictions on the Right to Repair?
This proposed legislation arrives in the wake of a recent New York State “right to repair” law, which aimed to empower consumers to repair their own electronics. However, as noted by several sources, including TechDirt , the law was significantly weakened after lobbying efforts by industry groups, effectively diminishing its intended benefits. This pattern of legislative action raises concerns about a broader trend of restricting individuals’ ability to tinker, modify, and control the technology they own. The right to repair movement advocates for policies that would require manufacturers to provide access to parts, tools, and information needed for repairs, promoting sustainability and consumer choice.
The Role of the Technical Working Group
The New York bill does include a provision for a technical working group to assess the feasibility of the proposed “blocking technology.” However, Adafruit expresses concern that this group could be composed of individuals lacking the necessary expertise, potentially leading to a rubber-stamp approval of the legislation regardless of its technical limitations. The composition and independence of this working group will be crucial in determining the ultimate fate of the bill. The bill states that regulations aren’t required until the group determines that it is possible to enforce, but the potential for bias remains a concern.
The debate over New York’s proposed 3D printing law highlights a broader tension between public safety concerns and the principles of innovation, freedom of expression, and the right to tinker. Finding a balance between these competing interests will require careful consideration of the technical challenges, potential consequences, and the importance of preserving a vibrant and open maker community. The outcome of this legislative effort could set a precedent for other states grappling with the challenges of regulating 3D printing technology and the proliferation of ghost guns.
As of February 20, 2026, the bill is still under consideration by the New York State legislature. The technical working group has not yet convened, leaving time for further discussion and potential amendments. Individuals and organizations interested in influencing the outcome of this legislation are encouraged to contact their state representatives and participate in the public discourse. The next step in the legislative process is a hearing before the Assembly Judiciary Committee, scheduled for March 15, 2026. Stay informed about updates and opportunities to engage by visiting the New York State Assembly website https://nyassembly.gov/.
What are your thoughts on the proposed legislation? Share your comments below and let us know how you believe this will impact the 3D printing community.