This project was a blast, and for me let me see some of the capability of modern tools.
Final Shot First:
My father gifted me a garage sale find of an old Stanley Plane that had seen better days
Step one was to learn about Rust Removal:
Next up, was some modeling with Fusion to see if I could successfully recreate the plane body.
I printed out some thin slices to verify my measurements. Turns out they weren’t right and it was a worthwhile exercise. A few adjustments and I had a model.
I used a very precise tool of taped together strips of paper to calculate my angles.
I had a knotty piece of walnut that had nice grain and was near to my dimensions. As well I had some leftover powder coat that I decided to use. I filled the knot with epoxy and the powder coat to end up with a matching plane.
The plane body on the CNC was just 4 operations and took about 2 hours total. This included a mistake that shoved my stock out of place and nicked the back end. This was a great lesson on how annoying it is to try to re-align a half done project. It ended up slightly narrower because of this, but no big issue.
The Handle modeling was more difficult, because I wanted to get the long bolt angle correct and I would need to set it up with reference pins so that I could flip and complete a 2 sided cut. I over-reacted a bit and this took about 5 hours to complete. Luckily I needed to spend some time cleaning all the metal bits and prepping for paint.
This is when I came up with the idea I am most proud of. I was very worried about how I would drill the correct angle through the handle. since I had created the model myself, I added another model that would mate to the cut handle and act like a bit-guide. I used my 3D printer to create this drill guide. While it looks silly, it worked flawlessly. 
What impressed me the most was that the fit was so perfect, I even had a positive click as it locked into place.
I didn’t take any pictures but somewhere in here I turned the handle on the lathe, sharpened up the blade, and powder coated the metal bits with my trusty harbor freight machine.
The nice clean shavings were super satisfying from this project.