This doesn’t even make any sense, I have never linked anything to Stocks, (I assume you mean Stokes)
Yes Stokes, the experiment you linked where you said this proves that Petries findings were wrong. The same experiment thats completely different to your Russian video results. So which one is the true and correct result because they are all different.
There it is again the personal jibe. You can't discuss anything without resorting to personal jibes trying to make out that anyone who disagrees is stupid.
you can’t even recognize a close up image of the Russian experiment sample which I posted previously.
I did recognize the core and I showed you that it wasn't produce by a flywheel drill as you claim but a machine with a split copper pipe.
That core was produced by Nikolay Vasyutin the same ones that actually do use a flywheel and the results are completely different to your pic and Petries core. I mean you are calling me inept and stupid for not recognising things and yet you cannot recognise that your own core undermines your whole arguement
Once again here is the core from the same Russian scientist using the flywheel.
They look completely different. The core you linked was made by a machine drill and a split copper pipe which caused the light uniform and horizontal (not spiral) lines. Its a completely different method and result which is bad science.
What a nonsensical hand wave,
There it is again, this extreme mocking of different views like they are stupid. You now begin all you posts with such language and many times I end up showing you were mistaken.
you don’t get to make up stories that Dunn’s super technological drilling equipment doesn’t need to achieve the same precision of a modern day drill machine which is patently ridiculous and a complete copout.
Ah Petrie also said the same and Dunn was just confirming this. So we have two people coming to the same conclusion. What do you mean by Dunns drilling equipment. Dunn did not do any drilling. He was confirming Petrie's findings that due to the spirals it could be estimated that the drilling of core 7 had a fast feed rate.
The spiral shows the drill cut into the granite 1 inch for every 60 inches of spiral thread. Thats how they estimated the feed rate.
The inconvenient facts are pitch variations in Petrie’s sample are nowhere near the standards of modern drilling equipment but easily explained with tools we know the Egyptians used.
Like I said 10 times now its not the pitch that is determining the feed rate but that the grooves spiral down. Each spiral lands lower on the core than a horizontal striration. So each rotation is cutting in deeper than a horizontal line. The pitch may vary slightly between the two but its the spiralling of the pitch that is what is measured as to the feed rate because the spiral shows a deeper cut into the granite than a horizontal pitch.
So 10 horizontal pitches will not go down the core as low as 10 spiral pitches regardless of the variations in the pitch because the spiral cuts and landing lower down the core each turn. I have explained this several times now.
The most startling feature of the granite core Petrie describes is the spiral groove around the core indicating a feed rate of 0.100 inches per revolution of the drill.
Most people know of the great construction achievements of the dynastic Egyptians such as the pyramids and temples of the Giza Plateau area as well as the Sphinx. Many books and videos show depictions of vast work forces hewing blocks of stone in the hot desert sun and carefully setting them...
www.ancient-origins.net
And you wonder why I question your comprehension skills when this post rubbish like this.
Your doing it again calling me stupid and what I point is rubbish before you even prove your point and most of the time your wrong.
The split in the copper tube which the Egyptians could have utilized was designed to provide a more even distribution of the pulp inside and outside the tube to facilitate easier cutting by the abrasive while the nick in the copper tube cannot contribute to the striation pattern since copper is a very soft metal.
So your having a go at me for pointing out bad science. You cannot provide results to prove your case from tests that may use completely different methods or equipement to the Egyptians. Thats bad science.
Your also not acknowledging that a machine did this and not a flywheel which is another inconsistency with method. So far you have posted the Russian experiments and Stokes experiments all using different methods and equipment ie machine, bow drill and flywheel drill and split and unsplit copper pipes. Thats not good science.
You claim the split copper pipe doesn't cause the nicks and yet logic tells us that an open cut has edges on both sides which will nick the sides when it wobbles. Otherwise please provide evidence that the split will not cause the nicks. You make unsubstanciated claims.
You are also very quite about the machine that was used and not a flywheel and that the results from the actual flywheel show a completely different result to your pic.
The Egyptians took advantage of this property as during the drilling process corundom particles embedded into the copper to form a temporary fixed abrasive.
Ah so now your appealing to fixed point cutting just like Petrie and Dunn said. Yet you were attacking them as whackos. The abrasion of Corrundum will not stay fixed for continious spiral cuts and will quickly be ground into pulp.
If corrundum did cause the deep cuts then why do other tests with corrundum not produce the same horizontal lines as your pic.
Here are cores using corrundum as the abrasive that have not left lines like your core.
Expedition Magazine | Ancient Egyptian Stone-Drilling
Click to magnify and you will see not lines like your example and this is from the same scientists using the flywheel method and corrundum abrasive. If you look at the corrundum abrasive its like a paste and the grains are tiny and cannot cut deep grooves up to 1/100th to 1/500th of an inch.
Anyway regardless of what rationalisation you want to use the proof in the results which show its completely different to your example and there are very few lines on the core and its mostly abrased away as would be expected.
I have lost count the number of times it has been explained to you it is not the copper that does the cutting or produce striations but the abrasive.
And I have explained to you that the corrundum does not cut deep into the granite as it is grit it quickly is ground into pulp. The fact all the other results using corrundum do not produce the lines or deep cuts but rather light stratches is evidence for this above.
This has gone on far enough, the Egyptians drilled holes in granite blocks which were used as hubs for hinge pins.
Not all of them. You make out you absolutely know the way you dictate to me what is and is not. So far your evidence does not support your claims.
These have been found at Saqqara and the green colour in right hand image is due to oxidised copper.
Where do you think this copper came from, it illustrates that copper doesn’t cause striations but leaves a residue on granite.
The copper tubes had fixed cutting points so of course there will be copper. The copper tube was the tool as there was no other metal to use as the drill. But as the evidence shows there must have been
fixed cutting points embedded in the copper that could penetrate deep and cut through quartz as easily as feldspar.
Loose corrundum aabrasive will not produce the same results as shown in the many tests using corrundum.
As Petrie stated.
This essential principle- that the cutting action was not by grinding with a powder, as in a lapidary's wheel, but by graving with a fixed point, as in a planing machine-must be clearly settled before any sound ideas of the methods or materials can be arrived at.
Reading Tool Marks on Egyptian Stone Sculpture
Maybe points made from hard minerals like corundum, microcrystalline varieties of quartz or other gemstones could be embedded in another material like copper or wood and used as a graver. All of these hypotheses require further investigation, including the consideration of contemporary gemstone carving technologies around the region.82
Reading Tool Marks on Egyptian Stone Sculpture - Rivista del Museo Egizio
There you go again. You keep belittling me and I keep showing your name calling is unjustified. Even if I was wrong you don't call people who truely believe what they do as deluded because it disagrees with your view. I have shown that you are wrong several times but I don't say your deluded. This debate has been going on for over 100 years and there is no resolution so how can you be calling people deluded when there is no absolute answer.
in refusing to accept the high pitch measurement standard deviations of both samples stems from the same source that they were produced in similar ways using the tools we know the Egyptians used.
Except as I jhave said many times now that the pitch was spiral and deep cutting through quartz deeply up to 1/100th to 5/100 of an inch deep in Petries core number 7.
Your examples and others I have linked are light strirations and horizontal surface lines. Completely different.