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The OSSM is an open-source framework for building your own device. Your specific combination of parts may have risks not inherent to other builds. Some risks may be undocumented or undiscovered.

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Understanding Your Responsibility

The safety of the OSSM continues to be characterized as an evolving project. As a DIY build, only you can be responsible for your safety. If you are unsure about something, find a resource, ask the Discord community, or pause before proceeding.

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Safety Hierarchy

When using your OSSM, follow this hierarchy of safety controls:
  1. Maintain ability to move away ā€” You should always be able to physically distance yourself from the device
  2. Maintain ability to remove power ā€” Keep the power switch or plug accessible at all times
  3. Assign safety responsibility ā€” If using restraints, the Top or supervising partner assumes responsibility for all consenting adults involved

Hazard Reference

View the complete hazard analysis including vulnerabilities, consequences, and mitigation strategies for designers, builders, and users.

Design Guidelines

Learn the safety principles for designing, building, and operating your OSSM safely.

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General Safety

You should understand how your setup works before operating it. Every build differs slightly, so ensure you are comfortable with your configuration.
When in doubt, ask the Discord community or consult the documentation before proceeding.

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Electrical Safety

24V is generally considered a safe, low voltage. However, you should always verify wiring polarity and ensure nothing conductive is near the board or power supply that could cause a short circuit.

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Mechanical Safety

Pinch points exist near the rail. Keep body parts away from these areas during operation.
Depending on your motor selection, the OSSM can generate significant force. This force can cause injury if not applied correctly, especially in delicate areas. Always:
  • Maintain the ability to move away from the machine
  • Designate someone responsible for your safety when using with a partner
  • Understand your risk tolerance and have a plan for potential issues
This is an open-source, community-based project. Many contributors help develop it, which accelerates progress. This also means no single entity is responsible for the complete safety of the design. Play risk-aware and consensually.