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originally posted by: skalla
I'm demonstrating that you can work granite with other stones and that it will not burst to pieces like you maintain. It's not easy, but it is simple. No need to get your knickers in a twist.
originally posted by: Blackmarketeer
Here is a simple site with some overview of stone working techniques, at least those used in Egypt.
Offline there is wealth of information on the topic, get ye to a library and away from yon interwebs full of incredulity..!
A decent book on the topic: Experiments in Egyptian Archaeology: Stoneworking Technology in Ancient Egypt, Denys A. Stocks (Google books might have some pages to preview on it)
originally posted by: Harte
What exactly is mysterious here?
Harte
originally posted by: Dolour
originally posted by: Blackmarketeer
a reply to: JamesTB
May want to pick up a book or two on ancient stone working techniques before resorting to incredulity. I think you would be amazed at just what you can do with a pound stone or hammer stone, and all the other tools they had at their disposal.
part of my education was material science.
one thing i know from that is that if you pound a brittle material like granite, itll burst to bits.
ANY tool used for pounding in ANY way, would NOT be able to shape granite blocks.
this can ONLY be achieved by chip removal.
Yeah, sorry but as already stated those are the most classic and recognisable of hammer-stone marks, widely seen on megalithic sites.
absolutely not, they show drilling marks with tremendous gain per revolution, obvious milling and sawing marks etc...
are you into material science somehow, wich enables you to actually distinquish toolmarks?
The reason for them is simple - as a hammer you choose a harder stone than that which you are shaping for obvious reasons
you DO know that granite is far harder than the tools used?
wtf you think why i linked the wikipage for mohs scale?
MAYBE so even a guy like you who isnt into the topic can look up some reasonable?
originally posted by: Hanslune
Pounding out stone works, I have done so both in Egypt at the quarry site of Shellal and at Rapa Nui's Rano Raraku (much easier a much softer stone) We were verifying the work of Heyderdahl which he noted in his book Aku Aku.
It works fine but on the uninitiated you need to the find the proper ratio of force versus jarring of your shoulder muscles.
Sorry you are completely wrong why are you making false statements - is this some form of trolling?
originally posted by: Dolour
originally posted by: Hanslune
Pounding out stone works, I have done so both in Egypt at the quarry site of Shellal and at Rapa Nui's Rano Raraku (much easier a much softer stone) We were verifying the work of Heyderdahl which he noted in his book Aku Aku.
It works fine but on the uninitiated you need to the find the proper ratio of force versus jarring of your shoulder muscles.
and where is this object you created that way, with tollerances of less than 100th of an inch, featuring perfect angles, now?
i dont think you understand what it takes to shape any object with that kind of precision.
the human hand, without any screw threat leading the tool, is NOT able to work work that precisely.
originally posted by: Hanslune
So you accept that your previous statements about the effectiveness of pounding are incorrect. That rock pounding actually works?
Actually I can say with some certainly that you have no idea how they did it and therefore make up statements from incredulity as if it has some impact, it doesn't.
Since by the examples of your temperament displayed here anything; evidence or comment I make will be automatically denied what is the point of doing so? lol
So instead tell us how they did it since you seem to know they didn't do it the way we think and have evidence for.
originally posted by: Hanslune
a reply to: Wolfenz
If you wanted to built a structure that people could see and be impressed by or to allow as many people as possible to witness a ceremony at the top what type structure would you build?
You left out that that nearly every culture created a knife, a spear, an awl, etc does that mean they had a common cultural ancestor?
Humans often create the same solution to the same problem other humans have - without ever having met.
97% of history isn't lost we have obtained a limited and selective view of it and understand the basics of its flow - pending further developments and finds. As time goes on we will sharpen our understanding of the past.
If you wanted to built a structure that people could see and be impressed by or to allow as many people as possible to witness a ceremony at the top what type structure would you build?
You left out that that nearly every culture created a knife, a spear, an awl, etc does that mean they had a common cultural ancestor?
Humans often create the same solution to the same problem other humans have - without ever having met.
97% of history isn't lost we have obtained a limited and selective view of it and understand the basics of its flow - pending further developments and finds. As time goes on we will sharpen our understanding of the past.
originally posted by: Wolfenz
I see your Point's ...
Similar Structures Similar Building Methods Ocean Apart ... To Millennium Ages Apart I said (( SIMILAR ))
You May have to look around Turkey Iraq Iran to Bolivia Peru & Easter Island to See it ..
HUH yes it is Lost , unless your talking about Petra glyphs and Cave paintings that are Claimed to be 30thousand to 40thousand years old .. earliest recorded claimed Written history is by the Sumerians and Ancient India tho there may be older writing's as I found out that on Easter island there is Hieroglyphs Striking similar to Ancient Pakistan Hieroglyphs..
I tend to Think There were Ancient Trade Routes from the old World to the New
Unfortunately we Lost the Library of Alexandria in a few Major Fires that Could Explain the Ancient Mysteries of Ancients..
originally posted by: JamesTB
originally posted by: Harte
What exactly is mysterious here?
If you want to merely recommend a video, why don't you just do that on YouTube?
Here, we prefer discussion, not television.
originally posted by
Dolour
really nice!
did you see the wavelike toolmarks on some of this stuff? :p
similar to what we see here
looks pretty much like a milling cutter was at work.
The marks in your pic are the result of pounding stones gouging out material. That's how stone was quarried if it wouldn't cleave along straight planes. For example, granite vs. limestone, which actually breaks off in blocks and can be split because of that fact.
Harte
Well firstly this looks pretty mysterious to me -
s27.postimg.org...
I can't imagine who would do something like this and for what purpose? Maybe you can enlighten me ....
originally posted by: Dolour
originally posted by: Harte
The marks in your pic are the result of pounding stones gouging out material. That's how stone was quarried if it wouldn't cleave along straight planes.
thats really illogical, you wouldnt get ANY kind of pattern, but a throughoutly rough shape.
whats with the wavelike structure? how could manually beating poundingstones vs the wall create theese patterns?
originally posted by: Dolour
For example, granite vs. limestone, which actually breaks off in blocks and can be split because of that fact.
en.wikipedia.org...
they didnt have any means of shaping theese blocks due to the lack of sturdy metals.
its one thing to break off one rough piece, but something compeltely different if you wanna maintain 90° angels...
grab a piece of wood, an angle bracket and a rasp.
if you manage to get the surfaces even close to 90° to each other im impressed.
note that this is a soft material, and modern tools, youll still most liekly fail without the aid of modern maschinery.
leave alone getting this stuff right to a 100th of an inch with primitive tools.
originally posted by: Dolourdont underestimate how freakin difficult it is to get those angles correct in relation to each other.
thats one of the things they force you to do during metal-working hours.
it took me well over 40 hours to get a SINGLE piece of 20x20x15cm right, not imagine millions of such "materpieces".
you dont apply that degree of accuracy unless its nessesary, or the maschiene is on its own working with this accuracy.
one thing E-V-E-R-Y engineer will tell you is that you "dont work more precise than you HAVE to"!
originally posted by: Dolour
allso, how would ancient people have moved things like the 1200ton obelisk in assuan?
originally posted by: Dolour
ramses statue? collossi of memnon? perfectly(!! so flat our BEST maschienes couldt best it) polished 100ton sarcophagi in the serapheum?
originally posted by: Blackmarketeer
a reply to: Dolour
A decent book on the topic: Experiments in Egyptian Archaeology: Stoneworking Technology in Ancient Egypt, Denys A. Stocks (Google books might have some pages to preview on it)
originally posted by: Dolour
originally posted by: skalla
Granite has no internal structure and will not burst into bits when you pound it, or every hammer stone I use when working flint would be useless.
quoted from wiki: "When used in materials science, it is generally applied to materials that fail when there is little or no evidence of plastic deformation before failure"
originally posted by: hydeman11
a reply to: Harte
You know, you've brought up a lot of interesting things in relation to rocks. One can't help but wonder if you've got some experience with geology.
originally posted by: hydeman11As for grinding these hard granites (minerals ranging from 6-7 on average...), it might take a bit more than sand... Luckily, I've seen some maps of emerald (beryl at 8) and harder minerals known to be in Egypt. I don't know if the Egyptians used these resources for cutting, but I recently used some beryl to grind down some moonstone (plagioclase feldspar from granite). It worked pretty well and only took me a few hours. Don't ask me why...