I am in need to export an assembly into a step file but my mates are gone when i re-open the step file. What am i doing wrong? How am I suppose to send the assembly file to a customer?
If they only need the exterior shape as an interface, try saving the assy as a part using the Exterior Faces option, then resave that as a SAT or STEP file.
Jodi,
Take a look at this thread. It has a macro that reestablishes the mates.
https://forum.solidworks.com/message/55558
But understand that step files are nothing more the dumb solids.