You can copy from another application and paste into DesignSpark Mechanical. This is currently supported for Rhino and Moment of Inspiration (MoI). Simply copy an object in Rhino or MoI, then open DesignSpark Mechanical and click Paste.
Objects are placed in their original position and will not be placed relative to selected objects in DesignSpark Mechanical.
Objects pasted from MoI do not have their units defined by default and could be scaled very differently when you paste them into DesignSpark Mechanical. To change the units in MoI, click Options, then set the Unit System field.