Generally I have more or less 3 questions when it comes to 3D printing (metals) and I am not finding the answers using Google. So, I am just asking here as I am using Blender.
It's always easy to create one mesh that has a million vertices and having all those vertices you probably make such an object (e.g. a ring) even look like it has a Class A surface.
Also, even a perfect cube will automatically be somewhat filleted when printed. The cubes here e.g. are 2*2*2 cm and the right one is beveled with an offset of 0.0001 m. Is that approximately the filleting the printer gives me for free? Or am I getting sth. smaller/larger?
Several watertight, but intersecting meshes can be uploaded as one object when using online 3D printing services. Here, all the selected faces are coplanar. This is, of course, pretty ugly geometry, but can I still assume that this will finally, when printed, give one planar surface?