Build a Simple 3D CNC Plotter

Hi friends, I previously built a mini CNC plotter that had a limited working area of approximately 100 x 100 millimeters. Additionally, the project used a custom PCB. I’ve made some improvements to this project. As requested, I set up a circuit on a breadboard featuring stepper motor drivers and an Arduino Nano. I also redesigned the X and Y axes to be interlocking. The biggest change is the size. This new version has a working area of around 400 by 400 millimeters. But my printer, the Bambu Lab A1, only supports up to 256 by 256 millimeters. So I used the cut tool in Bambu Studio. So I used the cut tool in Bambu Studio. I selected the dovetail mode and adjusted the rotation settings. Then I fine-tuned depth, width, and flap angle before placing the cut. After that, I used the perform cut option to split the model. Now the axis is divided into two parts. I temporarily removed one part and exported the other as an STL file. Then I brought back th