Thanks for agreeing that I can publish you recent private email, and my response. It’s baffled us both as to why some STL aspects of the model didn’t work, but at least there’s now a version that looks OK on Shapeways.
You said originally that you local hobby shop reported:
I have attached 2 pictures.
1 to show the section of roof missing.
The other shows a corner that does not join the other wall.
I have also loaded it into my 3D printer software and there is something definitely wrong with the file. As I can not click on any of the walls to align it with the print bed.
This shows the file has issues, as I have not ever had this before.
Also the width of the tram is still wider than the others I have printed for you.
As the photos appear almost if not totally identical, I’ve only included one here.
Well, I’ve no idea why the roof corner is not printing. It’s a solid component, the axes are not flipped.
I’ve gone back to your original large model, remade one end (which was just loose geometry) as a component and realigned it, rotated a copy to replace the loose geometry at the other end, and adjusted the position of the end trim slightly (it wasn’t quite on the edge).
Uploaded it to Shapeways. Says ‘fixing your model for printing’.
It’s still missing a roof corner. GRRRR!
Copied and rotated the opposite corner into position to replace the non-printing part.
Noticed that the thick part in the middle of the top of the roof wasn’t central lengthways, but centred on one of the sides. Moved it to be in the overall middle on red axis.
STILL missing the near front corner.
Exploded the component and made it into a group instead. both SU and Solid Inspector 2 think it is a solid group.
Tried Shapeways a third time.
It STILL omits the near front corner.
When I import the STL back into SU, it shows the centre of one end of the roof with reversed faces, and Cura thinks that is unprintable (red in the image below),
Finally, I explode and make a group instead of a component of that piece of roof, and try one last time on Shapeways.
This time, it appears to work in Shapeways, shows complete, and printable (I finally worked out how to view the model in 3D on Shapeways).
There seems to me to be more than one bug in the current STL exporter. Not just the ‘it won’t print if you flipped or scaled any component by -1’ bug which is known but still not fixed.
I can see NO obvious reason for the original not to be printable, once I had fixed the flipped or mirrored components, nor why after fixing the corner, the middle part of one end showed reversed faces in the STL export which weren’t there in the original SKP file.
All of the elements of the model were valid solid components originally, both according to SU, and to Solid Inspector 2, and only one was originally mirrored - the missing corner. And even that still didn’t work after exploding and re-making into a separate unique component, unflipped.
Please Trimble SU Team, can you see (a) why this model took so long to make printable, and (b) fix the bug(s) in the STL exporter and retrofit it as far back as possible. Or make an installable extension which can be retrofitted.
Cars 10-13 large JWM - missing corner when printed.skp (557.3 KB)
Cars 10-13 large JWM.skp
Finally printable version: