An Open Model, Open Source, Core-XY, FDM 3D Printer
The result of many years of refinement, this 3D printer offers a light-weight, open, yet also rigid design. The clean look is achieved by keeping components like motors and rails inside the frame. This allows for easier enclosure, should that be desirable.
The control software is open source on GitHub. It is a simple GCode sender designed for the Pi 7" touch screen. Better supported options like OctoPrint may be a wise choice unless you are keen to help with development and debugging.