Find the design on Printables: Wedge Laptop-stand by impulse1delta
I not sure it would break first, it’s printed with 6 perimeters, the part is pretty strong !
It’s made of PLA, printed with 6 perimeters (2.4mm wall thickness) the front of the design is almost solid plastic (very little infill). It is probably to much and it would be fine with 3 or 4 perimeters. There is one test print I tried to break by using on as a lever against the other, I couldn’t even damage it.