This trackball holder can tilt the thumb-operated trackball by 45 degrees, greatly optimizing the ergonomic design and allowing you to easily control it without twisting your forearm.

This bracket is compatible with trackballs of models such as Renkforce RF-WM-501 and Renkforce RF-4760558, as well as similar products of similar appearance available on platforms like AliExpress and eBay.

You can choose to place the trackball loosely on the bracket, or use double-sided tape and other fixing methods to firmly attach it to the bracket. The open hole design on the back of the bracket ensures that you can easily access the power switch and USB wireless adapter interface of the trackball

It needs to be used with the corresponding support components

As always, I have attached the OpenSCAD source files so that you can customize and improve them as needed:

• Fromhttps://www.openscad.orgDownload and install OpenSCAD.
• Launch OpenSCAD and open the attached OpenSCAD source file
• Modify the various parameters at the top of the file, or directly adjust the code.
• Save your changes
• Render the design model
• Export the rendered model to formats such as .stl file
• Carry out slicing processing and print the model.

For more of my design works, please visit:
https://www.thingiverse.com/thinger13/designs

Historical review
I once purchased an ergonomic trackball that was quite expensive but extremely excellent - the KENSINGTON PRO FIT M01480-M ERGO. However, shortly after the warranty period expired, this trackball malfunctioned. Unfortunately, Kensington refused to provide free repair or replacement services, citing it as "out of warranty". Upon disassembling it, I found the internal structure to be somewhat disorganized and completely irreparable. Given the short lifespan of Kensington trackballs, I switched to Renkforce products and specifically designed this trackball holder, aiming to