Ti rings made from SR-71 Blackbird parts

Mecha

Titanium Bladesmith
Knifemaker / Craftsman / Service Provider
Joined
Dec 27, 2013
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10,085
Hello everyone!

Here are titanium alloy rings made from mission-flown parts of the legendary SR-71 Blackbird aircraft!

The great Tech. Sgt. Daniel Freeman, of mach3ti.com, a career machinist and specialist in repairing, maintaining and modifying the SR-71 while serving in the U.S. Air Force, has entrusted me with making his ring models for Blackbird and aerospace enthusiasts. I suggest taking a look at his website.

These two rings are the first fruits of learning the meticulous, very touchy process of making these. The little things went through a LOT to get to this point. They have flaws, they're not as perfect as Dan's rings yet, but much was learned and I believe the process has been nailed down and the next ones should be much more refined. Future rings will mostly be made custom, to spec.

The thin one is composed of two very thin layers of ti, spot-welded as part of the aircraft, while the narrow one is solid, welded ti.

In person they look quite nice and are comfortable, although the close up pics make them look kind of scuffed. They might get polished further, but I like them.

Thanks for looking!

The thin one is size 8.75, while the narrower one is a tight size 7.5, depending on which way it's turned (very slightly off round). They can be heat colorized.



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The latest ring. This one is made from a piece of 61-7960, which is currently located at Castle Air Museum, in Atwater, California.

Internet says: "The aircraft is notable for a significant incident on 29 July 1968, when pilot Ben Bowles and Reconnaissance Systems Officer (RSO) Butch Sheffield successfully managed an emergency following an engine explosion at an altitude of over 60,000 feet and Mach 2.5."

The photos first show the ring as-polished; then with "Edge of Space" blurple oxide; and finally with "Mission-flown Oxide" polished alpha case.

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Someone at a lab did some testing on a piece of this titanium. Thought I'd share!

The sample:

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Alloy content. The carbon content is not an alloying element, and is likely from surface contamination and the nature of the scanner:

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Electron microscope image:

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Some more info:

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