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Thread: 1825 granite bed lathe - photos

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    Jon
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    jimfols (08-06-2020), KustomsbyKent (08-08-2020), mwmkravchenko (08-06-2020), Philip Davies (08-09-2020)

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    Supporting Member jimfols's Avatar
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    That could be called rock solid.

    Recon the fixture off to the left in the top photo with the bicycle crankset was for sharpening tools?
    Jim

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    mwmkravchenko (08-06-2020)

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    Supporting Member mwmkravchenko's Avatar
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    Quote Originally Posted by jimfols View Post
    That could be called rock solid.

    Recon the fixture off to the left in the top photo with the bicycle crankset was for sharpening tools?
    I would be making the same guess. Looking like a grinding wheel.

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    Supporting Member Philip Davies's Avatar
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    Philip Davies's Tools
    Is any mason willing to divulge how the granite was worked? With machinery? Or laboriously sawing, scraping, etc? (Serious question)

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    Supporting Member mwmkravchenko's Avatar
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    Could be worked with time honored methods of quarrying and then lapping. Still done today, albeit by machine.

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    Supporting Member jimfols's Avatar
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    I also found the chain drive for the carriage interesting.
    Jim

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    Supporting Member mwmkravchenko's Avatar
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    Quote Originally Posted by jimfols View Post
    I also found the chain drive for the carriage interesting.
    Kind of looks like a timing chain. Very robust. And kind of smart. Could give you accuracy with small amounts of machined parts. Only two gears.


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