Stylus for 3D printer touch screen.

The Tronxy XY-2 Pro 3D printer has always been my least favorite machine of those that I own.

In it's factory configuration, the XY-2 Pro is not even tunable.  The Chitu firmware that comes pre-installed has no provisions for PID/MPC tuning, nor does it include capabilities for adjusting E-steps.  

Unhappy with the poor quality prints that result from wild temperature fluctuations on the hotend, I decided to build and install Marlin on my Tronxy.

Having saussage fingers and neuropathy in my hands, I found the touch screen to be problematic with the stock firmware, especially when skimming through models on the SD card.  After inadvertently overwriting the printers configuration parameters multiple times since installing Marlin, I decided to design a stylus to save me some aggravation.  Marlin menu's are not easy to navigate with fat fingers.  I much prefer an encoder wheel…

The Tronxy touch screen display does not require a capacitive or active stylus for operation.  I tested the display using a leftover piece of PLA support material from a previous print and it worked, so I knew this stylus was going to work once I printed it.  It will not work on your smartphone, and I can't guarantee that it will work on every, or even most touch screen displays, but I did test it on my Anycubic i3 Mega, the only other printer I own with a touch screen display, and it worked perfectly on that machine as well, so I'll probably print one for it too.

I printed this as oriented in the STL without any need of support.