I’m trying to build a model that has rectangular indented surfaces on each of the four corners. I’ve made the base surface and have extracted isocurves that show the size/position of the areas I want to indent. Right now I’m stuck because 1. the isocurves intersect at 90 degrees whereas I want rounded corners and 2. after that, I’m not sure what the best way to create this chamfered-indented surface would be.
I’ve drawn over a screenshot here to show what it is I want to do. Any advice on how to do this?