Use M2 screws to attach the Raspberry Pi 4 to the frame.

Use M3 heat set threaded inserts on the base stand and M3 screws to combine base stands together, and attach the frame to the base stand.

Space below the base stand can be used for cable control, hiding ethernet and power cables.

Models can be printed with basic supports on build plate only

2x frames can be printed on mini sized printers

3x base stands can be printed on mini sized printers