File with image embedded for those still playing along.

C.

Had some success coming back to it tonight with a fresh set of eyes.

Chris

Looking good twofoot!

The joints at the second horizontal line from the bottom see slightly non-tangent, and perhaps could have a small segment trimmed out,
and be re-blended? Or maybe it is an optical illusion.

Just in general, I've noticed some old blueprints seem to have small non-symmetries, and small inaccuracies.

Did you use shell?

- Brian

Hey Brian. There are a number of different extrusions that will occur before it become a fully modeled, 3D piece. That might account for the inaccuracies you mention.

Yes, there are tiny differences to be found in old blueprints. After all, they were done by hand! We take for granted .000001" accuracy, and use it even when it isn't really needed.

One thing I have learned working with these old documents, "back in the day", they were a lot less about aerospace tolerances and more about proper function and longevity. Most times a 1/32" was "good enough".

Chris

I doodled on it...

Hello,

Similar to Burrmans technique, you might also find it helpful to create horizontal and vertical lines, Blend between those lines, and then nudge the lines so the blended curves fall into place.