Anyone know? Pls advice, Thank you.
the quick answers. Draw your shapes in the extrusion editor with the pencil tool. Outside shape of the hex nut and inside shape. If you get the shape you want, it will be a nice hex nut when you return to scene editor.
The right answer: Draw in illustrator and save your self the headache of drawing to draw anything outside of simple primitives in swift.
The even better answer. Any other true modeling program will provide better results. (from 3d paint, 3ds, maya, etc…)