If you eat lunch at Burrito Union, you’ve no doubt seen the Discovery Channel’s “How Its Made” playing on one of the big screen TVs. A couple weeks ago, they ran a segment describing how curling stones are made, from Scottish quarry to Canadian machine shop. Unfortunately, I missed it. But you never really miss anything these days, thanks to the internet. Here is the episode, on YouTube:

There is a lot more information on the types of granite used for stones, and reconditioning old stones, at the website of Canada Curling Stone Company in London, ON.