Magnetic EMCOTEC BEC Safety Switch

A 3D-printed magnetic safety switch inspired by the original EMCOTEC magnetic switch system. Designed for RC aircraft equipped with an external BEC or power management system. The magnetic key allows the power system to be switched on and off without mechanical contacts exposed to the outside of the aircraft.

!!! Printing Notes !!!

Important: A pause has been added at layer 30 for magnet insertion.

When the printer pauses:

1. Insert a D5×4 mm magnet into the designated cavity.
2. Verify the magnet orientation before continuing.
3. Press Resume Printing to complete the print.

This creates a fully enclosed magnetic key with a clean appearance and secure magnet retention.

Features

• Compatible with EMCOTEC-style magnetic switching systems
• Lightweight design for RC aircraft
• Easy-to-see red “RBF” safety tag
• Durable and easy to print
• Perfect replacement or spare magnetic key

Applications

• RC aerobatic aircraft
• Giant scale models
• RC jets
• Models using EMCOTEC power systems and BECs

Notes

This model is intended as a replacement magnetic activation key for compatible EMCOTEC magnetic switches. Always verify proper operation of your power system before flight.

Designed by Danny 3D ✈️🔋🚀

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Tested on EMCOTEC magnetic BEC switches used in large-scale RC aircraft.