Turning a cylinder into a space suit collar
I go to the Append button in the SubTool menu and click Append. I choose a cylinder and modify this with the masking took to create interesting forms. I then mask off one area and then click Deformation> Size to enlarge the unmasked areas. I can create semi-complex, hard surface shapes this way. I mask off a ring-shaped form, then select SubTool>Extract to create a ring-wall form. Finally, I reposition the form to create the inner ring of a space collar.
Click Deformation and then change the size. Apply a mask.