After a month or more of buggerage with the Linux PC, I'm pleased to have a diversion in the form of a loominum throttle body housing for a colleague (Toolchimp). Originally the drg called for a piece of 20mm but my cupboard was bare. Mother Hubbard. Finally I twigged that I have a piece of 19mm plate that will do the trick. He modified the model and we have a plan.
Import Solidworks to Fusion 360:
The original model was created in Solidworks and I need to get that into Fusion so I can create the CAM toolpaths etc. Luckily, my paid-for version supports import of SW files rather than forcing export to STP or IGS first. I think this basically means the models have their parametric data.