https://forums.autodesk.com/t5/inventor-forum/3d-sketch-on-custom-workplane/m-p/5649390#M375012 <BLOCKQUOTE><HR />@Anonymous wrote:<BR /> <P>How to snap a 3D sketch to a custom workplane? I know how to snap to the ordinary work planes for XY, ZY or ZX but if you have a plane 45 degrees between these plane how to snap to that for example?</P> <HR /></BLOCKQUOTE> <P>It seems to me that you're talking about a 2D sketch rather than a 3D sketch. I've looked over this thread and I'm a little confused about what you're trying to do. If you're putting a 2D sketch on a plane other than an origin plane, you simply select 2D sketch from the 3D Model tab and then left click the desired work plane. If you're trying to snap 3D sketch line end points to a plane, you select 3D sketch from the 3D Model tab, then (assuming you've drawn a line) you select coincident constraint from the 3D Sketch tab, then select an endpoint, and then select a plane. The two should snap together assuming that the end point is not already fully constrained.</P> <P>&nbsp;</P> <P>Does this explanation help?</P> Fri, 22 May 2015 21:15:07 GMT Anonymous 2015-05-22T21:15:07Z