Well, I'm trying to print new wheels for my landmower. Here is the model picture: https://cdn.thingiverse.com/renders/5a/fd/52/bf/19/56ddd441bdafc582eb3d18cef4be1d73_preview_featured.jpg I need the external part of the wheel to be filled 100% and the inside part of the wheel to be only 20% The reaso...