I have tried this and it merges the components together. I wanted to have the components made out of different materials but having a single STL model exported does not allow this as the software sees it as one piece.
If your models are so close in size/fit, that the slicer combines them, I doubt that any common printer will print accurately enough to get a result with separate bodies, even if the slicer recognized the boundary surfaces. Can you live with a little more clearance?
- 2 weeks later...
What about the "merge models" option? That is the standard workflow for multi-material prints... you import the models, select the materials, select all the models and then right-click and select "merge models". Cura then should arrange the components as you had done in the assembly.
You could save the *.asm as a single *.stl, review the options before hitting save. Select "save all components of an assembly in a single file". It may differ on other versions. I am referencing my 2012 version selections
Open the stl from the file menu within Cura
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