Limit switch bracket for 2020 aluminium extrusion

This is a good-looking and rugged endstop limit switch bracket that fits on 2020 and other 20xx V-slot aluminum profiles.
This bracket fits the inexpensive three-wire limit switch that can be found on sites like AliExpress for small DIY CNC or 3D printer projects.

These limit switches are perfect for light-duty CNC applications (laser engraving, acrylic engraving, glass engraving, soft wood milling, EVA foam milling, hot wire foam cutting, pen plotting, PCB milling...) running on Arduino controllers. They're better than plain limit switches as they provide some EMI noise immunity because the switch is wired with three wires (with NC and NO contacts for true clamping to 5V or GND), and they include an RC snubber that reduce electrical noise interference during activation to minimize false readings. These switches also include a nice small red LED that indicates activation.

The switch is held in place with two Allen M3x5mm round cap screws and two brass inserts in the plastic. The bracket is attached to the aluminum profile using an Allen M3x8mm cap screw and an M3 T-nut in the V-slot profile.