DDR DPR VEB C03 metal construction set plastic plates

In my childhood I was gifted with VEB C03 construction set (rather expensive and rare in USSR).
It had manual with pics of the nice models including electric and plastic parts from other sets. I was so sad that I didn't have them :)

Now I'm 42. I have a 3d printer and can design things in Freecad. My children tried to build something from old VEB C03 so I decided to make missing plates.

Used PETG with top layer ironing enabled for printing