onshape model

3/4" wooden dowel used
#8 wood screws 

.2mm layers
.4mm line width
Walls: 5
Alternate extra wall: On
20% Infill
Gyroid Infill
Print Large Face downwards(either)
No supports
Print in PLA+

DISCLAIMER: It's tolerances for my 3d printer (.3mm), edit in onshape if you'd like to fit your printer(download it and delete it if you do so i get prusameter please)

Purposes
Bracket: Wall mounting the dowels
Connector: hold dowels together so filament does not pull them apart