PrusaSlicer 2.3.0 Beta 3 - placing objects "in the air"  

RE: PrusaSlicer 2.3.0 Beta 3 - placing objects "in the air"

Good Morning Marcus

Add your first part to the build plate in the normal way, then Right click on this part, and select the Add Part option and choose the second part. 

if the first and second part were saved with a relative offset, then the relative offset will be preserved and the second part will automatically be imported at the correct height and location
If the parts were saved with no relative offset the new part will be imported to the middle of the build plate, and you can then move it as you wish, using the manipulation tools to the left of the 3D editor screen

In the top part of the image above, the soldier on the left and his base disc were added as separate items and you cannot elevate the soldier to stand on the disc,  you can see I have right clicked on the right hand soldier, and selected  "Add Part>Load"  and then selected the STL for the Base Disc

In the lower part of the screen, you can see that I have added the Base Disc (NOTE! the disc appeared off the build plate and I had to manoeuvre it into place), I moved it relative to the right hand soldier, then selected the soldier element, and raised him 3mm to stand on the base.

Please also note, these soldiers were down loaded from thingiverse ( https://www.thingiverse.com/thing:2449964/files) the orange triangles with exclamation marks indicate that the slicer has identified errors in the STL's.
You can either click on the triangle or use the menu, to select "Fix through the Netfab" and the slicer will try to use Netfab to repair the item (this may take some time)

Regards Joan