About this 3D model
This is a sled designed to carry the Z-axis endstop via an arm with an adjuster for Z-height. The sled uses printable LM8UU bearings to reduce weight. The sled works via an electromagnet. When the X-axis moves to MAX position, the electromagnet can be engaged to capture the sled and thus tow it into position for Z-probing, or disengage the electromagnet to dock the sled. The electromagnet is engaged via a relay a pin on the Arduino (RAMPS). The endstop mounts to the arm that mounts to the sled using M3 bolts. This sled requires updates to the firmware (Marlin). I am working on the code updates. Check back later for updates on the firmware changes. You can see it in action here: https://www.youtube.com/watch?v=iPLJ0FUKZiM&feature=youtu.be