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For hard stones, like carnelian, iron points don't work properly, even it's a very hard iron. Then, romans used silex points, or some iron or wood stick with high-abrasive stones glued. It's like a diamond point from our days, that is made of iron with diamond dust glued.
And, yes, they make two holes, one in each extrem.
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A bow drill and a bow lathe are useful, but differ from a pump drill. I've never drill carnelian, except with a modern drill. It's a type of quartz with a hardness of 7. I do hope to drill rock crystal as in the Dura pommel, and a friend has suggested sand from the beach glued to a prod.
John Conyard
York
A member of
Comitatus Late Roman
Reconstruction Group
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Thanks for the drill info guys, I had never heard of 'silex' before.
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Sorry. Silex is the spanish word for flint...
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Found pics of the bow drill/lathe. Looked on youtube for an example of it working but only found people making fires. If anyone comes across a video of a drill in action, do let me know.
I *think* I may have seen similar things at a rural crafts show but not sure what period of time they were used in.
Kat x
~We are all in the gutter, but some of us are looking at the stars~
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For all those links and books THANK YOUUUUUU!!!! Mille Gratius tibi ago.
So cool.
J
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link didn't link with wordpress.