Re: TridCloudwalker's Anakin AotC Lightsaber Run!
Alrighty then, so I spent two hours of my day off at the machine shop today making sure the final cuts on the shroud were correct. It was quite a process, but I think you'll all like the results.
When we last saw the shrouds, they looked like this:
Now, measuring and blueprinting a prop is fairly straight forward. However, when it comes to angles where corners are not defined, it can get a little tricky. This is what the angled cut on the shroud is like; the transition between the angle and the straight cuts are met with a smooth rounded curve instead of a sharp angle. There was not a protractor handy when measuring the original prop, so arbitrary points on the curved radii and tangents had to be chosen to approximate the length of the sides. When these were translated to blueprint form, they looked right, but when plugged into the endmill and compared to my high-res photos of the original, it was a bit off.
Jig made to hold shroud in place:
Milling:
Here's what came out the first time with the original blueprint measurements:
It's close; damn close, but there are some differences to the original prop. The radius is too sharp, the angle is a little too extreme, and the tangent toward the top is practically missing, leaving a sharp angle instead that shortens the length of the outer curve.
Some more shots:
And here's a shot posted by one of our members here from one of the traveling exhibits of what the angles should look like (not from my high-res collection taken at the Archives, but you can get the point:
So some tweaks were made in the programming, and a slightly larger endmill bit put in, some prayers said, and what we ended up with was perfect! We also discovered that the tangent where the angle starts toward the top of the shroud was actually sanded on, and not machined. So we kept the sharp angle in the computer program, and then hit it with a belt sander afterward, and it ends up with the same exact curve and grain of the original prop! How's that for accurate.
Here she is:
These will be getting run for the next few days, and then either the knobs are going to get cleaned up (those little nibs cut off) or the grip slots will be getting cut out on the main bodies. Stay tuned.