On Mon, 24 Aug 2015 21:58:54 -0600, graham > wrote:

>On 24/08/2015 8:06 PM, John Kuthe wrote:
>> On Mon, 24 Aug 2015 20:15:44 -0500, Sqwertz >
>> wrote:
>>
>>> On Mon, 24 Aug 2015 18:33:39 -0600, graham wrote:
>>>
>>>> On 24/08/2015 4:59 PM, Xeno wrote:
>>>>> On 25/08/2015 8:08 AM, Dave Smith wrote:
>>>>>> On 2015-08-24 5:30 PM, wrote:
>>>>>>
>>>>>>> If I were John, I would send away for a replacement set
>>>>>>> of the Capresso burrs (Swiss), and figure out how to retrofit
>>>>>>> his B&D burr grinder with them. Because burrs don't last forever.
>>>>>>>
>>>>>>
>>>>>>
>>>>>> Oh sure. Those coffee beans are so much tougher than the steel burrs.
>>>>>
>>>>> Swing by the Grand Canyon next time you're in the area. Water erodes
>>>>> stone! ;-)
>>>>>
>>>> Actually, it's the sediment carried by water that erodes stone.
>>>> Graham
>>>
>>> Water without any sediment, water is still very effective in erosion.
>>> If you pour a bucket of water into a pile of dirt, what happens? The
>>> force of fast moving water is very effective at wearing away rocks.
>>>
>>> -sw
>>
>> Yep, it's physics. Water weights 8 pounds a gallon, 69 pounds per cu
>> ft! And kinetic energy is 1/2mv^2!! Do the math!
>>
>> John Kuthe...
>>
>John, he was talking about ROCK, not dirt.
>Graham

So am I. I boat the Saint Francis river in Fredericktown, and my least
favorite rapid is the Dam Breach, because those blocks they built the
dam with are manmade crap and haven't been worn as smooth as the rest
of the river!

John Kuthe...