Aspire can do some 3D work.
This was done in Aspire

but for parts with curves, think a mobile phone mold etc you need 3D / fusion 360

For most part they are just built up from 2 1/2D parts that Sheetcam can handle fine.

Carry on as you are and jump later if needed. the time for the learning curve is far better spend doing what you can do.