Skewed Reconstruction - Reverse Engineering The Skew Hand Plane

My progress may look minimal but it was challenging! In particular the curvature of the handle and the threads for the screws.

I started with the handle and quickly discovered that it was going to be way faster to sketch out the part and write down all my measurements rather than measuring as I modeled. I still had to go back and confirm some measurements as I was working. I also brought in a photo of the handle to confirm that I had the correct shape.

The profile of the handle that I then
revolved and filleted the edge.

The measurements for the handle and the
first screw.

Checking the shape against a photo.

The finished handle.

The next part I tackled was the long screw that holds the handle in place. I used the same approach for the screw as I did with the handle, I drew the profile and revolved it. The next step was to create a spiral curve that went around the neck of the screw, it was a challenge to get the correct spacing/number of steps. I then drew the profile of the threads and used 'sweep one rail' to wrap it along the spiral curve. I had to switch the path type to road like to get it to work. 

My cross-section of the thread
and the spiral curve.

I had to extend the spiral and then trim off the ends of the thread polysurface and create a capping surface on the bottom of the threads. I still haven't figured out how to boolean union the thread to the body of the screw...Ill need some help with that, I've tried everything I can think of...

The last part I worked on was a a smaller screw. This one has a rounded top and is much shorter than the handle screw. I still need to cut the top of the screw for the flathead slot but thanksgiving is getting in the way :) This screw was much faster to create because I had figured out how to use the spiral tool and the size if the threads was the same even though the number of turns was different. I might try to create a thread with a pitch instead of a number of turns but I'm not sure how to figure out the pitch/how to use it in the spiral tool, so that will be my second question for in class.