I recut tseveral sections using longer pattern (instead of 1 1/2x4 1/4 it is 1 1/2x 5 thus making the arc or radius larger, smoother transition) but IMHO the 30degree miters are incorrect due to the fact that the sections are joined using a compound miter. Just need to figure out what anglt the sections are joined at.
Its like cutting miters for a picture fram that the sides are slanted, not flat.
the link I posted is a miter calculator. I entered 6sections and 45degree angle thus the miters need to be cut at 20 .5 degrees.
I plan on playing with this interesting project.
and yes if you cut out the profile (pic 3) and use the cut off as a steady rest the push block is not needed (pic 8).
Looking at the pics (7 & 8) it looks like a board is being used as a fence? Is it me or ??can't see using a fence as the piece needs to be turned to follow the radius of the section???
http://www.woodworkersguildofga.org/...Calculator.htm