I am having several troubles exporting STL files for printing.
The main problem is that when I import the two parts into PrusaSlicer, the Z-offset is incorrect for one of the parts. Thus, they do not align where they are supposed to. (Instead of the top sitting immediately on top of the bottom, it sits in the middle.) It seems that the “Z” offset of the top part is wrong.
Each part is in its own group (so they they don’t merge into each other.) Each group is on its own layer (tag) so that they can be individually displayed.
For exporting I select one group, then “Select All” so that everything in that group is selected, and then I export with the “Export only current selection” option when exporting to an STL file. Then, I do the same with the other group.
In the past, I could then go to PrusaSlicer and import one of the STL files, and then “Add Part” to add the second file. (Or add both files and be prompted so that they would be both added as parts of the same Object.) And, in the past, each part would be in the proper position relative to the other parts.
But now the “Z” offset of one of the parts isn’t correct, so instead of being where it belongs, it is in the middle of the other part.
I would welcome any suggestions as to what I may be doing wrong, or what the work-around might be.
Here is how the parts look in Sketchup:
And, here is how they look after being imported into PrusaSlicer: (Notice that the top “sheet” that is yellow in Sketchup is now buried in the middle of the main part in Prusa Slicer (shown in orange), not on top:
Attached are the STL files and the SKP file.
I’m quite miffed as to what is happening. Ive not had this problem in the past, with Sketchup 2020.
2021-01-27 - Test.zip (243.2 KB)