I have to be honest, I haven't really used the "Coil" command in Inventor very much. After taking a deeper look into it, I found that not only do you have complete control of how the coil will be created, you can even create a spiral. The options inside allow you to control the shape by Pitch and Revolution, Revolution and Height, Pitch and Height and the before mentioned Spiral. You can even control the end points so that they would behave like flats on the end of a spring. Keep in mind that you could use this command to actually create threads in your models. Use with caution, a helix is the most computational consuming procedure for modeling purposes and can greatly reduce performance if used excessively.
John with the INCAT CAD Geeks
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