I'm building a Zero G Mercury1.1 with a Voron Stealth burner/Tap combo, Needed an Endstop that would activate micro switch on TAP Carriage. This is it, mounts to the bottom of the Mercury1 Y Carriage on the inside and triggers the micro switch. 

Printed in ASA but anything should work.

.2 Layer Height, .4 Nozzle.