3018 Z axis limit switch mount
thingiverse
This is a plate that mounts to the z-axis. Thread and tap the holes on the left side of the z-axis near the linear bushing with an m5 tap, and then attach it via a pair of M5 screws. This is designed to fit these limit switches from Amazon. https://www.amazon.com/dp/B06XTB7WMK After mounting and wiring, you'll need to make a custom striker plate. Mine is sized a little under, because I replaced the linear bearings on my z carriage and have less room.
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