3D printing with 1 mm wall thickness

Hello everyone! I'm Annie,I will share my experience with 3D printing projects.For 3D printing projects,in order to reduce costs and time, sometimes reduce weight.Usually we use hollow parts.For example,The 1 mm wall thickness just is hollow inside with 1 mm thickness, but does not change the shape of your parts. Does't affect the post-processing. In general, it's very strong.Maybe you have a better idea? Many thanks ^_^