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You tell me, you posted it. Core 7 isn't mentioned once.Which core are they referring to then ?


You tell me, you posted it. Core 7 isn't mentioned once.Which core are they referring to then ?
It isn't named, that the one you're thinking of is No.7 might give you a hint that there more than one.The granite core published by Petrie was made by the ancient Egyptians using a tubular drill. Note the similarity of the concentric lines (arrow) found on the core.
Which core are they referring to then ?
I can’t remember exactly, but I said copper wouldn’t touch granite.
Please bring the posts up ?
It’s not mentioned, but you’d have to be pretty daft to think that’s not the one they are referring to.You tell me, you posted it. Core 7 isn't mentioned once.
yes with perfect angles too, absolutly incredible and the top stone to fit precisely into a groove. Fancy buggering that up with your copper chisel and asking for another stone to be brought to you.
He’s joking ffs.#2514

I have a funny suspicion that they do indeed think that,.He’s joking ffs.
You lot just can’t admit defeat.
No one seriously things copper can chisel granite.
And since they do reproduce the tool marks...?It’s not mentioned, but you’d have to be pretty daft to think that’s not the one they are referring to.
Your post is clearly a **** take lol.I have a funny suspicion that they do indeed think that,.

With copper tools and abrasives...And since they do reproduce the tool marks...?
That might be the case, penn though had a drill speed of 1000rpm.With copper tools and abrasives...
He’s joking ffs.
You lot just can’t admit defeat.
No one seriously things copper can chisel granite.

They take everything that I say literally. They hang on every word I say.Your post is clearly a **** take lol.
I can’t believe brig of all people thinks it’s serious!?
Penn did it using a power tool, after all they did loads of different holes to test different combinations of tools and abrasives, but doing it slower using a bow drill is equally possible.That might be the case, penn though had a drill speed of 1000rpm.
Do you think that’s possible by hand ?
Apples and oranges.Penn did it using a power tool, after all they did loads of different holes to rest different combinations of tools and abrasives, but doing it slower using a bow drill is equally possible.