Im wondering how could you pre check that a 3D geometry like gears will work before 3d printing it.
Like take for examples this picture:
How would you know this kind of joint will work, that the spacing left is optimal?
Or for example this picture:
Are the gears going to work smoothly between each other? Is there a way to simulate it or test it before printing and wasting money and material?
This is not mine, but it represents my curiosity on how this was calculated to work perfectly when printed, instead of having to print multiple times before reaching the optimal solution.