CNC-Capable Super Safety
Overview
Unlock the potential of custom firearms components with this CNC-capable Super Safety design, a modified variant of Tim Hoffman's original that allows for precise milling from metal for enhanced durability and performance. Ideal for 3D printing and firearms enthusiasts, this downloadable file empowers you to create a reliable safety mechanism without the limitations of inaccessible cavities in the original design.
This design serves as a practical upgrade by retaining the lever in the cam using two headless screws, making it feasible for CNC machining while maintaining core functionality. Its key benefits include improved accessibility for milling, the ability to prototype via 3D printing, and potential for further tweaks like screw size adjustments to optimize fit and tolerances. Whether you're testing prototypes or aiming for metal production, this variant reduces manufacturing challenges and encourages community feedback for refinements.
CNC-Capable Super Safety Features
This CNC-capable Super Safety stands out by eliminating hard-to-reach cavities from the original design, allowing for smoother milling processes on metal materials. Key modifications include curved internal edges (updated on 5/1/2024) to enhance machinability and reduce potential stress points during fabrication.
- Screw Retention System: Utilizes two #2-56 3/16in headless screws to securely hold the lever in the cam, providing a simple yet effective assembly method that's adaptable for both prototypes and final builds.
- CNC Accessibility: Redesigned to remove inaccessible areas, making it easier for CNC machines to mill without complex tooling or multi-axis setups.
- Prototype Versatility: Successfully 3D printed as a prototype, offering a low-cost way to test functionality before committing to metal milling.
These features make the design practical for hobbyists and professionals, with room for adjustments like increasing screw sizes or tightening tolerances based on user feedback. Community input is encouraged to refine the model, ensuring it evolves for better real-world performance.
Difficulty & Build Time
- Skill Level: Intermediate
- Estimated Build Time: 2-4 hours for 3D printing a prototype; 4-8 hours for CNC milling depending on machine setup
- Required Experience: Basic 3D printing knowledge for prototyping; familiarity with CNC machining for metal production, including handling tolerances and screw installation
Hardware and Tools Required
Required Hardware
- Two #2-56 3/16in headless screws (socket set screw, point stainless steel; available via Amazon link: https://www.amazon.com/Socket-Screw-Point-Stainless-Steel/dp/B00FAV5N1A)
- Metal stock for CNC milling (not specified, but suitable for firearms components like steel or aluminum)
Recommended Tools
- CNC machine for milling the final metal version
- 3D printer for creating prototypes
- Allen key or hex driver for installing headless screws
- Measuring tools (calipers) for checking tolerances and potential adjustments
CNC-Capable Super Safety Parts
This downloadable file includes the STL model for the CNC-capable Super Safety, designed as a variant of Tim Hoffman's original with modifications for milling accessibility. For 3D printing prototypes, use standard settings with a layer height of 0.2mm and 100% infill for strength, ensuring the screw holes align precisely for retention. Material suggestions include durable options like PLA or ABS for initial tests, with metal recommended for final CNC-milled versions to achieve firearms-grade reliability.
Special considerations include verifying tolerances post-printing, as adjustments may be needed for screw fit or overall dimensions. The design's curved internal edges help with print quality, reducing the risk of warping during cooling. No additional parts files are included, but the model is optimized for single-piece fabrication with screw assembly.
Printer Compatibility & Settings
This design is compatible with most FDM 3D printers, such as Ender 3 or Prusa models, making it accessible for home users prototyping the Super Safety. Recommended materials include PLA for quick prints or ABS/PETG for better heat resistance and durability in functional tests. Use print settings like 0.4mm nozzle, 200-220°C extruder temperature, 50-60mm/s speed, and supports only if needed for overhanging features to ensure clean screw holes and curved edges.
Conclusion
In summary, this CNC-capable Super Safety offers a valuable bridge between 3D printing prototypes and metal milling, delivering enhanced machinability and customization potential for firearms enthusiasts. With its screw-based retention and community-driven improvements, it's a smart choice for those seeking reliable, modifiable components. Download, test, and share your CNC results to help refine the design—reach out for assistance with adjustments to make your build even better.
