Im trying to figure out how to make crisp edges on my mesh, without using loop cuts, which affect my mesh. As seen in the example on top of the model, I deliberately added a bump and on the side, I extruded a section inwards. Now when I add the loop cuts to give it a more crisp edge, the loop cuts which go around my model, also affect my object making it to deform. I tried the Edge Crease method, but the extruded section remains like a circle shape, and not rectangle which I'd like. Any suggestions how to get a particular section more crisp with out affecting the rest of the mesh?