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originally posted by: AdmireTheDistance
originally posted by: JamesTB
No traces? What do you think the megaliths all over the world are?
Exactly which sites do you think were built by this advanced civilization that somehow managed not to leave a single trace of ever existing?
Doubtful they would find fossils.
Why is that doubtful? We have fossils going back 10s of millions of years, if not longer, and artifacts left by hominids hundreds of thousands, or even millions, of years before modern humans even evolved. So how is it that just this one "civilization" has managed to elude us?
Give it up, James. You're only making yourself look foolish.
originally posted by: JamesTB
originally posted by: AdmireTheDistance
originally posted by: JamesTB
No traces? What do you think the megaliths all over the world are?
Exactly which sites do you think were built by this advanced civilization that somehow managed not to leave a single trace of ever existing?
Doubtful they would find fossils.
Why is that doubtful? We have fossils going back 10s of millions of years, if not longer, and artifacts left by hominids hundreds of thousands, or even millions, of years before modern humans even evolved. So how is it that just this one "civilization" has managed to elude us?
Give it up, James. You're only making yourself look foolish.
The very very earliest fossils are approx 10 thousand years old. The civilization I am talking about was wiped out approx 12 thousand years ago. So it is very very doubtful that we'd find any fossils pertaining to them. So you see that it's you who once again is being foolish. But judging by your contribution to this thread that's to be expected.
originally posted by: AdmireTheDistance
originally posted by: JamesTB
originally posted by: AdmireTheDistance
originally posted by: JamesTB
No traces? What do you think the megaliths all over the world are?
Exactly which sites do you think were built by this advanced civilization that somehow managed not to leave a single trace of ever existing?
Doubtful they would find fossils.
Why is that doubtful? We have fossils going back 10s of millions of years, if not longer, and artifacts left by hominids hundreds of thousands, or even millions, of years before modern humans even evolved. So how is it that just this one "civilization" has managed to elude us?
Give it up, James. You're only making yourself look foolish.
The very very earliest fossils are approx 10 thousand years old. The civilization I am talking about was wiped out approx 12 thousand years ago. So it is very very doubtful that we'd find any fossils pertaining to them. So you see that it's you who once again is being foolish. But judging by your contribution to this thread that's to be expected.
The earliest fossils are 10,000 years old? Please tell me you're joking, or that English isn't your first language and you don't quite grasp the meaning of the word 'fossil'.
And how is it that you know details such as when this civilization was supposedly wiped out, when real scientists and experts can't even find a single piece of evidence that it ever even existed?
originally posted by: Harte
originally posted by: bottleslingguy
that's b.s. those holes were cut with a cylindrical hole saw that left cutting marks and striations showing without a doubt the tool was moving through the stone at a speed that would be pushing the limits today. stop making things up with the vague claims.
a reply to: Harte
The claim about the speed is bogus, but otherwise you have it correct.
Cylindrical hole saws made of copper or bronze.
Harte
originally posted by: bottleslingguy
originally posted by: Harte
originally posted by: bottleslingguy
that's b.s. those holes were cut with a cylindrical hole saw that left cutting marks and striations showing without a doubt the tool was moving through the stone at a speed that would be pushing the limits today. stop making things up with the vague claims.
a reply to: Harte
The claim about the speed is bogus, but otherwise you have it correct.
Cylindrical hole saws made of copper or bronze.
Harte
you can't (well you can but you'd be wrong) get around the fact that such a copper hole saw would have to have an amount of pressure between the stone and the copper that it would soften the copper. the heat would weaken it and it could not move through that stone leaving those marks. sorry it can't happen. it is beyond will and determination of primitive people. the stone is the stone and copper is what copper is and no matter what you think is possible with bamboo technology, there has to be a certain amount of friction to do what we see has been done and the marks are the proof. you can not get the marks with slow speed hand tools. not gonna happen.
originally posted by: AdmireTheDistance
originally posted by: bottleslingguy
originally posted by: Harte
originally posted by: bottleslingguy
that's b.s. those holes were cut with a cylindrical hole saw that left cutting marks and striations showing without a doubt the tool was moving through the stone at a speed that would be pushing the limits today. stop making things up with the vague claims.
a reply to: Harte
The claim about the speed is bogus, but otherwise you have it correct.
Cylindrical hole saws made of copper or bronze.
Harte
you can't (well you can but you'd be wrong) get around the fact that such a copper hole saw would have to have an amount of pressure between the stone and the copper that it would soften the copper. the heat would weaken it and it could not move through that stone leaving those marks. sorry it can't happen. it is beyond will and determination of primitive people. the stone is the stone and copper is what copper is and no matter what you think is possible with bamboo technology, there has to be a certain amount of friction to do what we see has been done and the marks are the proof. you can not get the marks with slow speed hand tools. not gonna happen.
No pressure is needed, as it isn't really even the copper doing the cutting, it's the sand used as an abrasive. The copper is primarily a means to guide and control the sand. And if one were actually interested in learning how it's done, there are videos of people demonstrating the same techniques and achieving the same results, and they're not difficult to find.
originally posted by: skalla
a reply to: butcherguy
Because sadly, many people are caught up in the modern idea that hardness and speed are required to work tough materials and they just can't get over it.
originally posted by: skalla
a reply to: butcherguy
Because sadly, many people are caught up in the modern idea that hardness and speed are required to work tough materials and they just can't get over it.
originally posted by: bottleslingguy
originally posted by: Harte
originally posted by: bottleslingguy
that's b.s. those holes were cut with a cylindrical hole saw that left cutting marks and striations showing without a doubt the tool was moving through the stone at a speed that would be pushing the limits today. stop making things up with the vague claims.
a reply to: Harte
The claim about the speed is bogus, but otherwise you have it correct.
Cylindrical hole saws made of copper or bronze.
Harte
you can't (well you can but you'd be wrong) get around the fact that such a copper hole saw would have to have an amount of pressure between the stone and the copper that it would soften the copper. the heat would weaken it and it could not move through that stone leaving those marks. sorry it can't happen. it is beyond will and determination of primitive people. the stone is the stone and copper is what copper is and no matter what you think is possible with bamboo technology, there has to be a certain amount of friction to do what we see has been done and the marks are the proof. you can not get the marks with slow speed hand tools. not gonna happen.
originally posted by: skalla
a reply to: tanka418
Forgive me, but i don't believe that i understand the point that you are making - it seems as though you are stating that abrasives do not abrade, but actually cushion the target material from the drill bit?
originally posted by: skalla
a reply to: tanka418
Ok.
I've been saying the exact same thing in this thread (and others) re drilling rock with as little as a cane as a hand spindle and sand as abrasive, and that granite was worked into axes, maces etc in prehistory by grinding. As well as cutting rock with string and sand.
So i'm just a bit confused as to why you would say this to me?