Needed a chest plate for a Robot costume and came up with these. They have two slots on the back for a shoulder strap.
They're easy to print and require minimal support. You could probably get away with not having any supports on the female version (First print didn't and it was fine, second failed spectacularly).
My print settings:
0.30mm
2 Layer Perimeter
20% Lightning Infill (not really needed)
Dynamic Overhang Speed (Prusa v2.6): Enabled
Organic Supports: For Support Enforcers Only
It prints from the center up, then after both sides are printed you can simply super glue them together. I didn't have any issues with bonding.
Enjoy!
The author marked this model as their own original creation.