Petrie's Infamous Core #7

Chris Dunn 12/9/99

Ian,

Please don't think I have ever doubted your intelligence, Ian. If anyone can recognize intelligence, I can. I have a great respect for intelligence. I sometimes wish I could exercise more of it myself. (And I'm still smarting over the invitation to leave my local Mensa group so that I didn't dilute the gene pool.) ;<)

I understand you are not a trained engineer, though, from what you wrote in your previous posts, I didn't realize that you understood that feeding while rotating was necessary to achieve cutting when drilling. A simple misunderstanding on my part, I'm sure.

Your statement, "you have now amended your explanation of the supposed spiral grooves to suggest that the feedrate was "greater" rather than "faster", and that you do not think the drill bit was rotating rapidly (whichever method was used)," totally misrepresents my position. I have not amended my original thinking on the subject of feedrate or what I intended to say. I have rephrased my explanation not amended it. I never did think that the drill was rotating rapidly, and if you would go back and read chapter four in The Giza Power Plant: Technologies of Ancient Egypt, you will find that what you describe as a recent amendment, was, in fact, rephrased and published over a year ago.

With respect to the rest of your post, I am happy to respond with my report on my research at the Petrie Museum University College London.

Chris

Chris Dunn
posted 10-04-1999 20:54

Ian Lawton
posted 10-19-1999 00:06

Chris Dunn
posted 10-23-1999 17:06

Ian Lawton
posted 10-25-1999 07:21

Chris Dunn
posted 10-25-1999 20:24

Ian Lawton By email to Chris Dunn 12/6/99

Chris Dunn Response12/9/99

Chris Dunn Visit to Petrie Museum Part One - Posted 12/12/1999

Chris Dunn Visit to Petrie Museum Part Two - Posted 12/12/1999

Chris Dunn Visit to Petrie Museum Part Three - Posted 12/12/1999

Text and Photographs Copyright 1999 Christopher Dunn
Drill core #7 (UC 16036) Copyright 1999 The Petrie Museum of Egyptian Archaeology
University College London.

With Kind Thanks to the Petrie Museum of Egyptian Archaeology, London.