Assembled Magswitch Fob + Shoelace Holder

This is a printable replacement "fob" piece designed for magnetic lanyard kill switches. Printed in two pieces and twisting together to lock around an inserted magnet, this is specifically designed to work with switches like this one (WEIYINGSI E-Bike Magnetic Lanyard Kill Switch).  Here is a general search for a similar one from AliExpress.

This two-piece printable tray system replaces the original magnetic cap/fob that attaches to your lanyard. The original lanyards featured (1) a flimsy, glued assembly that could come apart over time, causing the magnet to fall out and (2) a weak lanyard string that could break under stress. This design allows for a physical twist lock (and glue, if desired) to prevent falling apart and allows you to use any lanyard you desire.

Non-Printed Parts

• 1 x 12x3 magnets (n48 or stronger)

or

• 1 x 12x6 magnets (n48 or stronger)

Printing Instructions

• 95a TPU recommended

• As much infill as you like

• No supports needed

• Print the "cap" pieces with their flat edge facing down toward the build plate

• Print the "magnet tray" piece with the circular base down toward the build plate

Assembly Instructions

1. Once you have both a top and tray printed, insert either a 12x3 or 12x6 magnet (depending on which cap you printed) and twist the cap and tray together.

2. Apply glue if desired to secure the joined parts, or leave it as is.

3. Install a 3mm or thinner lanyard through the top hole. Paracord works well and is plenty strong.