{"id":1903,"date":"1999-10-23T17:06:07","date_gmt":"1999-10-23T17:06:07","guid":{"rendered":"https:\/\/gizapower.com\/gizeh\/?page_id=1903"},"modified":"2025-05-13T03:56:59","modified_gmt":"2025-05-13T03:56:59","slug":"ian-lawton-posted-10-25-1999-07-21","status":"publish","type":"page","link":"https:\/\/gizapower.com\/gizeh\/articles\/petrie-museum-london-november-1999\/ian-lawton-posted-10-25-1999-07-21\/","title":{"rendered":"Ian Lawton posted 10-25-1999 07:21"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"1903\" class=\"elementor elementor-1903\" data-elementor-post-type=\"page\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-3512bff5 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"3512bff5\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-34b711cc\" data-id=\"34b711cc\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-26bdc60 elementor-widget elementor-widget-spacer\" data-id=\"26bdc60\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-171ae6d elementor-widget elementor-widget-heading\" data-id=\"171ae6d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Petrie\u2019s Infamous Core #7<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5cca889 elementor-widget elementor-widget-heading\" data-id=\"5cca889\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h5 class=\"elementor-heading-title elementor-size-default\">Ian Lawton\nposted 10-25-1999 07:21<\/h5>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-50c527c elementor-widget elementor-widget-spacer\" data-id=\"50c527c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1369ae95 elementor-widget elementor-widget-text-editor\" data-id=\"1369ae95\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Many thanks for constructiveness of last reply &#8211; now I think we are getting somewhere, at least on the machining front.<\/p><p>The major point I would once again like to emphasise, because I think we may still be clouding it, is the following: I have always understood that you allow for the fact that any rotational effect in the drill cores may be down to the feeding rather than the cutting mechanism, but surely my point still stands that any rotational striations caused by a &#8220;feed-not-cut&#8221; mechanism cannot be used to judge the basic speed of cut &#8211; and I still maintain that it was this very possibility which appeared to excite both Petrie and yourself in the first place. It is in this sense I have dubbed it a red herring, but if I am being unfair please elucidate further.<\/p><p>Also, with ref to the quartz layers being cut deeper than the feldsapr, may I remind you of Harry Brownlee&#8217;s comments as quoted in &#8220;Giza: The Truth&#8221; (p. 219): he argues that &#8220;when a diamond or corundum-tipped tubular drill meets a region of quartz which is embedded in the softer feldspar, some of the quartz may be ripped out, depending upon the crystal&#8217;s orientation and grain direction with respect to the tool angle&#8221;. Any comments on this as an explanation?<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b6df5c0 elementor-widget elementor-widget-spacer\" data-id=\"b6df5c0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Petrie\u2019s Infamous Core #7 Ian Lawton posted 10-25-1999 07:21 Many thanks for constructiveness of last reply &#8211; now I think we are getting somewhere, at least on the machining front. The major point I would once again like to emphasise, because I think we may still be clouding it, is the following: I have always [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1318,"parent":258,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"nf_dc_page":"","footnotes":""},"class_list":["post-1903","page","type-page","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/gizapower.com\/gizeh\/wp-json\/wp\/v2\/pages\/1903","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gizapower.com\/gizeh\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/gizapower.com\/gizeh\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/gizapower.com\/gizeh\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gizapower.com\/gizeh\/wp-json\/wp\/v2\/comments?post=1903"}],"version-history":[{"count":5,"href":"https:\/\/gizapower.com\/gizeh\/wp-json\/wp\/v2\/pages\/1903\/revisions"}],"predecessor-version":[{"id":1910,"href":"https:\/\/gizapower.com\/gizeh\/wp-json\/wp\/v2\/pages\/1903\/revisions\/1910"}],"up":[{"embeddable":true,"href":"https:\/\/gizapower.com\/gizeh\/wp-json\/wp\/v2\/pages\/258"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/gizapower.com\/gizeh\/wp-json\/wp\/v2\/media\/1318"}],"wp:attachment":[{"href":"https:\/\/gizapower.com\/gizeh\/wp-json\/wp\/v2\/media?parent=1903"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}