This is odd. I have no problems exporting multiple objects in a single STL file and Cura opens it and shows the objects spaced as I had them in FreeCAD. I've actually been doing this for quite a while. I simply select the objects and then do File->Export as an STL file.
I've done this with multiple PartDesign bodies and multiple Part objects with no problem. I just tested with two Part objects: a cube and a cylinder. I then modified the X and Y placement of the cylinder so they don't overlap. Selected the two objects with the tree view: click one, control-click the other. Exported as an STL. Opened the STL in Cura 4.7.1.
My current FreeCAD, though this has worked as far back as 0.18.4, I believe:
Code: Select all
OS: Windows 10 (10.0)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.22665 (Git)
Build type: Release
Branch: master
Hash: b0d7850406e046f3b7a8cd5da261e7d54df6bd99
Python version: 3.8.6
Qt version: 5.12.9
Coin version: 4.0.0
OCC version: 7.4.0
Locale: English/United States (en_US)