This looks very much like what I am trying to achieve. However, I had to break the 2D sketch into segments and calculate the approximate depth into the plate for each point (those are the z1,z2,z3, and z4 work planes/points) and then use those depths to create the 3D sketch that became the boundary patch. Which results in a 3D sketch that does not perfectly match what the 2D sketch is truly showing.
The 3D model does not get constrained by dimensions as all of our geometry is in 2D CAD and gets pasted in based on the center point of the plate.
Your last statement is more accurate to what I would like to achieve. A helical ramp with parallel sides. The issue I have had with the sweep cut is that the sides are not a consistent thickness so the sweep always ends up being inside the actually 2D geometry we are trying to cut.
The feature will be milled out of a stainless steel block on a 3D mill. They will most likely set up the block so that the ramp face is flat (the block on a slight angle) and just mill the material away. We are implementing features such as this on a lot of our new designs and we are looking for a simple solution to accurately model what the plates will actually look like.
