Threads not visible

[michael_ray_neal]

Threads show on my 3d view but when I export file for printing (.step file), the item prints, I have the hole but the hole is smooth and there is no visible threads in the hole. Im attaching a picture of 3d view as well as the .f3d file and a picture of the printed part showing smooth hole (no threads).

Thanks for any help.

[jhackney1972 · Accepted solution]

Threads must be set to the "Modeled" if you want to 3D Print them.  Cosmetic threads, default, will not 3D Print.  Model is attached showing modeled threads.