I'm new to 3d printing but have been using some design software for years.
I've printed some "things" successfully but now I have an original model and
I cannot figure out what I'm doing wrong. The stl file looks good in multiple
software programs and always when going from stl to x3g it creates fill in my open
areas messing up the design. I rebuilt from scratch completely and got the same result.
I think its the rounded corners? Any suggestions?


cross case 5.stl