How sensitive are the grindstones to frost?

[Ken S]

Excellent work, Robin.  Now we know my myth was just a myth.     It's good to see some practical science at work.

Thanks,

Ken

[Dick Parman]

I live in SW Nebraska, the last 10 days have given us day time highs in the single digits.  I brought my saturated stone in the house
a couple of those nights.  The last two nights I mounted a single 75 W light bulb on a flexible lamp stand so that I could direct the
heat close to the stone.  It appears that this was enough to keep the stone from freezing, and allow it to dry out without removing
the stone.