Made part A in PETG with 6 walls top and bottom 50% cubic infill , Part B was made in PETG-CF with 10 walls 6 top and 6 bottom (solid)

Note part A needs some support , I did go for tree support and 20 degrees in Bambu slicer 

Seems very strong , and way stronger than I thought.

Hope you enjoy this model, Happy printing !