360 degree Spiral (helix) with tangent end points

erik_meeks22

Hello,

Id like to create a spiral (starting radius red ring, ending radius purple, with 1 revolution). I would like the end to be tangent/same radius aas the purple circle. Every time i create a helix the end is not tangent to the final radius.

Is this possible? Do i need to make multiple Tangent arc's and smooth?

MichaelPascoe

There is not a default way to do this with the helix feature.

You can however, do it with custom features like Parametric Curve.

Here is a default workflow without any custom features at all:

Adjust the start and end tangency of the spline within Sketch - Helix profile. This will control the helix path. In the example, it is set to be tangent for both the OD and the ID.

https://cad.onshape.com/documents/cc91f79bfd12172c026d3af9/w/4fd26f7d83b5099a4778600e/e/3e5558e5af4…

Matt_Shields

I like the Parametric Curve approach.