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by Lloyd » Mon May 13, 2024 1:25 pm
by Open Mind » Mon May 13, 2024 12:11 pm
nick c wrote: ↑Sat May 11, 2024 4:13 pm lloyd wrote:I think you have the wrong impression about Nick's intent. He wants to show, IMO, that the precision tech was only possible after the Iron Age began. So he thinks that tech needs to be redated to much later than conventionally dated.That is correct.
lloyd wrote:I think you have the wrong impression about Nick's intent. He wants to show, IMO, that the precision tech was only possible after the Iron Age began. So he thinks that tech needs to be redated to much later than conventionally dated.
by nick c » Sat May 11, 2024 4:13 pm
by Lloyd » Sat May 11, 2024 4:05 pm
by Open Mind » Fri May 10, 2024 2:59 pm
by nick c » Thu May 09, 2024 2:48 pm
nick c wrote:an iron plate was found in between some stones in the Great Pyramid by Vyse, it is believed to be left behind during construction.
The plate was sent to the British Museum, where the feeling was the iron plate could not have been contemporary as iron was supposedly unknown in the Pyramid Age. However, two series of examinations (done in 1881 and 1989) clearly disprove that view:
"Though some doubt has been thrown on the piece, merely from its rarity, yet the vouchers for it are very precise; and it has a cast of a nummulite (fossilized marine protozoa) on the rust of it, proving it to have been buried for ages beside a block of nummulitic limestone, and therefore to be certainly ancient. No reasonable doubt can therefore exist about its being a realy (sic) genuine piece."
In 1989 examination was done by Dr. Jones (Senior Tutor in the Mineral Resources Engineering Department at Imperial College, London) and Dr. Gayer (lecturer in the Faculty of Petroleum and Mining at Egypt's Suez University). They, through checking on the nickel content of the plate, were able to exclude the possibility that the plate had been manufactured from meteoritic iron. Their tests also showed that it was most probably gold-plated. They concluded, "It is concluded, on the basis of the present investigation, that the iron plate is very ancient. Furthermore, the metallurgical evidence supports the archaeological evidence which suggests that the plate was incorporated within the Pyramid at the time that structure was built."
by Lloyd » Thu May 09, 2024 12:16 am
by Open Mind » Tue May 07, 2024 1:44 pm
by Open Mind » Sat May 04, 2024 4:13 pm
by nick c » Wed May 01, 2024 4:31 pm
- Material: breccia marble from the Narvsky open pit in the Krasnoyarsk Territory - Ingoing size: 200x200x200mm - Finished size: 80x135mm - Tool materials: wood, sandstone, corundum (grindstone + grinding agent), hemp string, alabaster, quartz. - Self-made tools: a grinding and drilling machine, a bow drill, a chambering tool (a grindstone on a wooden handle), a copper saw, copper drills of various diameters. - Total work time: about 6 months, 6 to 8 hours a day, excepting 2 days off a week. At least 2 months of this time period were spent on making and testing the tools.
The experiment was not intended to copy the ancient method of stone carving in detail. The idea was to show the possibility of doing such work using simple tools.
by Lloyd » Wed May 01, 2024 4:43 am
by Lloyd » Tue Apr 30, 2024 10:23 pm
Ancient Egyptian Granite Sawing Technology: reconstruction https://www.youtube.com/watch?v=i8ZHYWle0DE Scientists Against Myths Jul 7, 2020 The experimentalist Nikolay Vasiutin attempts to cut a piece of granite using ancient Egyptian methods: utilizing a copper saw with an abrasive agent (corundum). The stone cutting experiment was conducted for antropogenez.ru portal. Specifications: - Copper strip length: 22 cm - Granite piece thickness: 17 mm - Cut Length: 48 cm - Cut Width (max): ~6mm - Total time taken: 3.5 hours - Extracted granite weight: 46g (3012-2966=46) - Granite volume: 17.03 cm3 - Copper material wear: 23 gr. (229-206=23) - Copper volume: 2.58 cm3 This was referenced: "Granite, a Copper Saw, and Abrasive Material, Principles of Loose Abrasive Sawing. Excellent article by Oleg Kruglyakov: https://antropogenez.ru/sawing/ "
"... Experiment performed on the 12th of March 2017. A decorative kerf in granite." "Fig.15. A forged blade of a copper saw for an experiment.... I suggested that to make the refined decorative kerfs {saw cuts}, the Egyptians initially sharpened the blade somehow, without waiting for it to sharpen itself. It seems logical. Forging is the most economical option and perhaps even the easier one, too. That is precisely why I manufactured such a saw, and not to create a V-shaped kerf as such. The kerf should have turned out V-shaped by itself. I wanted to learn how they did it with minimum effort. And then he tried to make a kerf with it, with the help of a corundum suspension." "... An important note. In the process of abrasive sawing (as with abrasive drilling), grooves appear, change their position, merge, diverge, disappear and then appear again equally easily." "Quantitative Results of Experiment #1 - Kerf depth ca. 12 mm. - Kerf entry width ca. 3.5 mm. - Bottom curve diameter ca. 1 mm. - Taper angle ca. 12 degrees or less (keep in mind what the camera position does to angle perception). - Material expenditure: copper - 6 g, granite - 11 g. Division value of the scales: 1 g. - Specific weight: copper – 8.93 g/cm3, granite (in our case) – 2.62 g/cm3. - Volume of materials used: copper - 6/8,93~0.67 cm3, granite - 11/2,62~4.2 cm3. - Weight ratio copper/granite:6/11=1/1.8 - Volume ratio copper/granite: 0,67/4,2=1/6.27 *** Experiment performed on the 13th of May 2017. A decorative kerf in granite." "The working edge, just like previous time, was sharpened by forging." "The abrasive suspension consisting of water and corundum powder gradually mixes with abrading granite and copper and turns into a pulp, acquires a pink hue and rather quickly is thrown out of the kerf with the movements of the saw (Fig. 27, 28)." "To supply the work zone with abrasive we simply washed it in with a jet of water, and the soft hissing sound was followed by a gritting one which stopped rather quickly as the abrasive in the pulp was being ground into powder, and the pulp became slimy to the touch." "The mechanism of the abrasive in action is exactly the same as in the case of drilling...." "Quantitative Results of Experiment #2. - Copper saw blade length: 22 cm. - Granite plate thickness: 17 mm. - Total kerf length: 48 cm. - Maximum kerf depth: 17 mm (a through kerf). - Maximum kerf entry width: ca. 6 mm. - Wall taper angle: ca. 14 degrees. - Bottom rounding curve diameter: ca. 1 mm. - Total work time: 3.5 hours. - Granite extracted: 46 g (3012-2966=46), 17.03 cm3. - Copper wear: 23 g (229-206), 2.58 cm3. - Weight ratio copper/granite 23/46=1/2 - Volume ratio copper/granite 2,58/17,03=1/6.6 The resulting weight and volume ratios are equitable to those achieved in the first experiment in March of 2017."
by nick c » Mon Apr 29, 2024 12:18 am
Lloyd wrote:Sawing granite with copper or bronze saw https://www.youtube.com/watch?v=i8ZHYWle0DE
by Lloyd » Sun Apr 28, 2024 7:45 pm
by Lloyd » Sun Apr 28, 2024 6:36 pm
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