Creating path on a surface that is curved in two directions

robert_scott_jr_

Hello all. I want to enhance a Christmas gift with illumination. I have modeled a piece to hold an LED. On the surface of the piece ("led mount") I want to create troughs for wiring. I did have success in 'led mount' part studio by adding height to the profile used in a sweep. It'll work but it is not uniform in that the trough walls are of an inconsistent height; perhaps unacceptable in another application.

In 'led mount attempt2' part studio I thought I might be able to use 3D fit spline and Composite curve (new tools to me) to achieve better results but with no luck; the sweep did not work..

 Although I could live with the 'success' I had, I would rather learn a correct method(s). I ask for some guidance.

Thanks - Scotty

https://cad.onshape.com/documents/919399643ae910b593cc7ab7/w/6568002d6b165cb00b3743f1/e/e4163d7cad8559054058daa3

lana

See here https://cad.onshape.com/documents/288869618587a08f282b23d6/w/da38ffa78c01b23aed2cbfa2/e/80a9c919ebe3fb0bb3539d8b. Split face allows to project a sketch curve on the faces. Also I've added a little extra material to sweep to make sure we are not running into trouble due to sweep not matching the geometry exactly.

robert_scott_jr_

Thank You for your response. Glad to be shown a new (to me) method that might be applied to accomplish current and future tasks. I was not sure of how to project a sketch onto a surface other than by way of Use onto a flat surface or plane (other than Wrap in some cases). Now I see (by your example) that the edges of a surface can be used as a path. Nice to know.