Tutorial: How to make a springy spring

I am going to make a springy spring.
The project is Springy Spring.
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Step 1:
First of all draw a circle on top plane
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Step 2:
Now use a helix/spiral commend and give that circle to it and give parameters in fig.
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Step 3:
Now draw a line at right plane and coincident to the helix start point.
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Step 4:
now use surface sweep commend to make a sweep of line which is twist along path. you can refer all parameters from fig.
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Step 5:
now at top view draw a circle whose center is at corner of that surface as same as in next step
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Step 6:
this circle is now looking like this now.
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Step 7:
Now sweep that circle along path the edge of that surface sweep line.
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Step 8:
now delete that surface which is now we have no use.
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Step 9:
this is your final springy spring
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Step 10:
you can render like this
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Step 11:
and also this.