> Jon Ellison Wrote:
> > The tables are not reproduced.
> > How deep did He drill into the granite?
> Never fear.. Origyptian must be at church or
> something, but he did purchase hard copy of "the book".
In Mark Lehner's rather lukewarm Foreword to Stocks' book, he makes the following statement:
- "I saw Aswan quarry workers abandon blowtorches and carbide steel chisels to take up Denys’s toothless copper saw blade. With very persistent hard labour and plain desert sand they sank a cut into a large granite slab. The brightest moment of insight came at the end of the drilling experiment. For 20 hours three men used a bow drill patterned after ancient representations, with a copper tube and sand as a bit, to sink a circular hole 6 cm deep."
Althought Lehner calls it the "brightest moment of insight", he never openly embraces Stocks' tools and method as representing how that stonework was actually achieved by the AE during the Old Kingdom.
Stocks describes engraving a single shallow nb glyph in granite which required about 12 hours of flint chiseling and polishing (pg 92):
- "With regard to the ancient nb sign, it is calculated that another 4 hours for polishing should be added to the 8 hours already stated, making a total of 12 hours in all (Figure 3.17)."
Regarding his attempt to use reed tubes on granite:
- "The use of the reed tubes upon the coarse-grained hard sandstone and granite, utilizing wet or dry sand abrasive, so badly damaged them that no useful cutting could be achieved."
He claims that the large 8" diameter, 18" deep precision bore hole we see in Karnak was made by a copper tube with a wall that was only 3mm thick, but a closeup of that hole shows a far thinner cutting edge that tapers to a point. Meanwhile, his copper tube drill bits do not taper but rather are ground blunt and certainly look like modern-grade commercial copper pipe and not home-grown annealed and folded/soldered copper sheets!):
His tables regarding the wear-rate ratio of copper to stone do not indicate the composition or age of the copper. While he discusses the problems with pouring copper into molds and also annealing sheet copper, I can't find any statement about whether he's using that homemade copper vs. modern store-bought copper sheets in his experiments (but I recall in his video - which has since been pulled from Youtube - that it was modern sheet copper).
Meanwhile, I can find any data in any of his tables indicating the depth of any bore hole made with copper tubes into granite.
How can any of us ever know, when all we can do is think?
Edited 3 time(s). Last edit at 09-May-16 17:38 by Origyptian.