On Friday, 23 February 2018 08:20:23 UTC, Jeff Layman wrote:
Sort of OT, but not if you are into the ultimate in clock DIY!
http://longnow.org/clock/

Of all the things going on, I really like the stone-slicing robot which
cut the stairs.

This project has been going for 10 years, but I hadn't heard of it. I
wonder how many other rather strange privately-financed ideas are underway?

--

Jeff

https://www.youtube.com/watch?v=dBAJ-3KypZs