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<DIV>dolphin,</DIV>
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<DIV>I too am curious about construction of a helix and I say the one posted on the MCADCENTRAL site but I did not see any instructions. Actually, all i need to do is to learn how to create a helix that follows an arc or curve. In my project, I have created something similar to an open tube that is approximately 4 inches long and curved. It would resemble your closed helix except it would only be approximately 1/3 of the length.</DIV>
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<DIV>Larry Coyle</DIV>
1)Enter above expessions using Tools->Expessions, 'c' is number of turns.
2)Inset->Cuve->Law Curve...
Choose 'by equation' optionfor xt, yt and zt values
3)Now create a datum plane by using Point on Curve option, select the curve ceated.
4)Select this datum plane to create Sketcher
while u r in sketcher mode, choose Insert->Associative point...
click Intersection point icon on Point Constructor dialog box, and select datum plane and curve respectively. Create a circle (say5 units) and constrain its centerto the above created associative point.
5)Use 'sweep along guide'or 'swept' to create the model.
Thats all folks!!!
U canrefer these links to know more about such equations :
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