Rectangular stop (a new look)

“You never change things by fighting the existing reality. To change something, build a new model that makes the existing model obsolete.” ― R. Buckminster Fuller Development of new technologies of additive manufacturing requires a re-design of many things. The cost of production is no longer dependent on the complexity. What was done multistage machining and assembly is now done in a single cycle of 3D printing. Now you can design the best parts with low weight and high strength. I tried to execute preliminary design of a simple detail (stopper variant 1 classical ). Classical stop is made of titanium (thickness of 5 mm and a breaking strength of 12 MPa for 1 safety factor, mass 0,074 kg). Variant 2. I set a goal: to reduce the influence of bending and ensure self-aligning and distortions compensation. Modern stop also made of titanium, mass 0,054 kg. The strength of the modern design does not provide. Variant 3. More rigidity with less weight. 1 mm thin shell of double curvature reinforced support bars. This option is best for strength, but needs to be further developed. Findings from this problem See new versions: https://grabcad.com/library/rectangular-stop-a-new-look-final-1 https://grabcad.com/library/rectangular-stop-a-new-look-end-1 Maybe it's time to rethink the design of simple things :-) Comments are welcome!