I’m unable to create a new post so I have to reply here.
The attached STL files give me the same error when I load them as one part (i.e. multi colour print) and assign red ABS to one object and white ABS to the other.
Does anyone know why this is happening?
As I am a new user I cannot provide attachments or even links (stupid forum) so please work out how to get the file from the following text.
Start the link with the common online file storage that is not onedrive then add the following
.com/scl/fi/80z95pn6ls8igs4vit9eh
/problem.3mf?rlkey=g9p81o6784ng64hi1a1fia5oe&st=7ts84tnx&dl=0