How would I create the inset that is shown in the model, I am learning Rhino and trying to recreate this object I made in blender. In blender I would use an inset boolean however I cant seem to figure out how i would approach this in rhino?
use ExtractIsocurve on the needed surface to create one/some extra curves, and maybe DupEdge if you want to start where the polysurface joins. then use ExtractSrf with option copy, do that with all the surfaces that should contain your inset, now join, if needed trim the surfaces. use the command OffsetSrf with option Solid on the resulting surface/polysurface, you can flip directions by hitting F then space if it shows into the wrong direction. now use the resulting geometry to make a boolean operation.
or experiment with the command PushPull after you have extracted curves from before, that might make it even faster, but i have not much experience with this so i recommend it as my 2nd option. maybe start with that first also, its a new tool that was inspired by Sketchup after being requested hot heartedly.