OffsetSrf problem /:

I have a polysurface that I’m trying to offset of thicken but just cant get it to cooperate properly. My level of understanding might not be great enough to know what’s happening and why it wont work properly. On some edges, theyre left unconnected. I’ve tried extruding, scaling, thickening, and offsetsrf’ing. Rhino_mkYSRVWnT3 (133.5 KB)

Hello - the object in the step file is pretty messy - edges do not line up very well - it will take a bit of work getting it sorted out first I’m afraid.