PRUSA i3 10mm rod Z Stop Adjustable Assembly

thingiverse

This project was created using Tinkercad and can be edited online at https://www.tinkercad.com/things/4d3s0mbFAR3. May Update: May 2015 - A recommendation is made to secure the thumb screw mount to the existing motor mount part with glue, ensuring it doesn't loosen or move over time. Acetone is recommended for ABS plastic and Gorilla Glue for PLA plastic. This design seems fully adjustable and rock solid stable, making adjustments rarely necessary. Achieving accurate Z-stop height is crucial for high-quality prints, and this design makes that process simple. Self-tapping the thumb screw into its mount ensures a tight thread fit, eliminating play and vibrations that can affect setting accuracy. To use this device effectively, it's essential to secure the outer cover on the micro-switch, which typically relies solely on solder leads for stability, causing positional issues due to bent leads. Notice in the photos provided that a tie wrap is used around the 10mm guide rod, securing the Z-stop bracket and recommended for use. The design incorporates multiple parts to improve printing efficiency and accuracy. The micro-switch mounting clamp prevents switch movement, improving position control. With this accurate X-Y positioning system in place, users can remove the Micro Switch metal spring, enhancing Z positioning accuracy and repeatability. To assemble these components efficiently: 1. Print all parts without support. 2. Assembly uses a single metal nut; if needed, drill threaded holes with a 2.5mm drill and then tap M3 screws into place. 3. One metal nut is used under the adjuster knob to prevent spinning. 4. A tie wrap is attached to the base mounting bracket to further secure and stabilize it. This device ensures precise X-Y positioning for accurate Micro Switch control, improving printing quality and efficiency.