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Something that is difficult to cut may be easy to break. For example I have some knives that a file will just slide across, you can't drill them and forming a new edge is difficult even with a diamond stone. But the same material wouldn't make a good pry bar at all.
How did they cut the sample in the photograph?There are companies who have technology that is years ahead of what is available for us to utilize these times.
Whatever they make--They can also break!!!!
Is it possible to be on a lake and have a homing directional beam being emitted from the shore so a person could navigate to that beam's source? For example at night to a jetty.
The American Radio Relay League (ARRL) is the national association for amateur radio, connecting hams around the U.S. with news, information and resources.
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