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New Custom Feature: Bi-Rail Surface

Like a boundary surface, but with three curves, One Profile and two Rails
https://cad.onshape.com/documents/557b17f88f38ef73de260113/w/847f2ad071cb0e78bd856b1e/e/2815c8e4b818a854ab7b7ed6
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Comments
Nice! I've always liked your curve manipulation feature that you've extended to do this. It is the most obvious use case for it (I think) so makes sense to wrap it into one. I'll experiment with it some more…
Excited to play with this.
Simon Gatrall | Staff Mechanical Engineer | Carbon, Inc.
this is basically why i wanted to do it in the first place, not sure why i never added this in before.
Works as mono-rail now as well.
Interesting. I can see some cases for a first surface, though I find it hard to control when other surfaces are already existing, for rail tangency cannot be controlled, and isn't kept when initially existing in the profile curve.
https://cad.onshape.com/documents/f2498ef6f1a14692e4bcdcc5/w/a11914a6fbcaa02473d9ee70/e/c16db0a254f1ba5814211f50?renderMode=0&uiState=68bd4436ed8291a8c0a34092
if you have two surfaces, you can just bled between them. Birail and monorail are more intended to be used for creating initial slabs when you have very little to work with, or maybe just scan data