The model is in 2 pieces because the baseplates contains screw thread. print the baseplate flat on the bed. Mount the baseplate on the angled bracket with 2 m3x10 screws and 2 hex nuts. then mount it to the wall.
After mounting it on the wall you can attach the basestation using its ball screw nut thingy (I dont know how to call it excactly)
The author marked this model as their own original creation.