Fillet Curve

Hi, I have a question about creating a specific fillet in my curve. I’m constructing a railing for a helical stair, I’m using a set of points coming from the ends of each step, but I can’t seem to find a way of avoiding this straight end happening, here is a picture of what I’m trying to achieve. Thanks in advance!

And here is how my stair ends suddenly.

STAIRS.gh (138.8 KB)

You created a ruled surface between the two vertical large segments of the stair wall.

This ruled surface is a problem when filtering edges later on. Your brep only has 9 edges. This is a weird brep. In this case it should have 12 edges.

If you create four ruled surfaces using the edges, the resulting brep has 12 edges as expected.

Four edges are 0.06 m long. You can filter brep edges based on the length and extract their indices. Then fillet like this:

STAIRS_fillet.gh (156.3 KB)

optional solution since I don’t really like how the fillet looks in the solution above:

STAIRS_fillet_cone.gh (167.5 KB)

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I see now! Thank you soo much!!

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