draw circle od as any value
select the circle,
then go to insert- curve -helix
give the parameters (like pitch, revolution...)
create one plane perpendicular to that helix at the starting point(use ref geomentry- per curve option- select starting point of helix and helix curve)
now create circle for spring cross section(its center should be coincitant with starting point of helix).
then select insert - boss- sweep - select circular cross section and helix path.
now u can get spring.
regards,
murugan
INDIA