Can I use Fusion 360 from Autodesk with my STEPCRAFT CNC?

Yes, you can use Fusion 360 with STEPCRAFT.  There is a post-processor that you can download for the CAM portion of Fusion 360 by going to https://cam.autodesk.com/hsmposts?

Fusion 360 is a very powerful program that can greatly expand the capabilities of what you can do with a STEPCRAFT (or any CNC for that matter).