Thank you, Scott!! This is most excellent, and very helpful. (I presume the screen-used is the one on the top?) You don’t have a pic that shows a profile view of the needle, do you?
It looks like the little tab divider thing in the needle is asymmetrically offset to the left. Have I got that right, or is it just the slightly non-perpendicular angle of the photo plane to the object?
Most replicas don’t account for how odd (and probably hand-done) the machining must have been on this. It is all possible on a conventional manual mill, however, especially if you have ball end mills and one very small end mill. With Scott (robot418)'s permission, I’ll post machining steps here once we’ve got them all worked out.
The one thing that still puzzles me and isn’t 100% clear from Scott’s photos is whether there is a curvature up under this part.
That is to say, I’m wondering if that interior wall close to the rounded-end rod is flat or curved. If it’s curved (as it looks in some photos), the machining would have been very tricky and very manual, as you’d have to go in at angles through that little slot (thanks to the finger indents on the sides, there really isn’t enough room to go up through the center hole with an end mill and round that area). However, in this photo, it looks flat. Which makes life much easier.