{"id":62,"date":"2024-12-21T17:43:42","date_gmt":"2024-12-21T16:43:42","guid":{"rendered":"https:\/\/gtwr.de\/blog\/?p=62"},"modified":"2024-12-21T17:46:44","modified_gmt":"2024-12-21T16:46:44","slug":"toolpost-grinders-what-are-they-good-for","status":"publish","type":"post","link":"https:\/\/gtwr.de\/blog\/2024\/12\/21\/toolpost-grinders-what-are-they-good-for\/","title":{"rendered":"Toolpost grinders &#8211; What are they good for?"},"content":{"rendered":"\n<p>There will be a moment in time in almost every lathe owners\u2019 career when the desire for a tool post grinder starts to grow.<\/p>\n\n\n\n<p>I have a strong opinion on tool post grinders, and it\u2019s not a good one.<\/p>\n\n\n\n<p>The idea:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u00a0Creating higher precision parts, possibly out of hardened materials<\/li>\n<\/ul>\n\n\n\n<p>The reality:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Grinding is not an inherent more precise process<\/li>\n\n\n\n<li>Grinding adds another layer of complexity<\/li>\n\n\n\n<li>Lathes are not designed to be a very good ID\/OD grinder<\/li>\n\n\n\n<li>Tool post grinders are often quite crude devices. Very heavy and cumbersome to setup, often with belt drives that tend to add vibrations, motors sitting on top of a large stack up that add vibrations to the entire system<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<p>There are exceptions of course \u2013 Some materials just can not be cut with carbide\/diamond or CBN inserts in a cost-effective manner. Ceramics and Carbide can be such a exception, also they have some utility when working with hard chrome plated items like \u00a0hydraulic rods.<\/p>\n\n\n\n<p>ID work in hardened steels or ceramic\/carbides can be a case where grinding on the lathe is a viable solution, if no other machine is available.<\/p>\n\n\n\n<p>But even then, it\u2019s a good idea to keep the actual grinding done on the lathe to a minimum \u2013 I had to make some carbide bushings, to keep grinding to a minimum, I had the ID bore wire EDM cut to almost finished size, the OD of the stock was chosen to be the final dimension, and the length was ground on the surface grinder.<\/p>\n\n\n\n<p>The actual grinding on the lathe was performed with a high-speed air driven spindle, held in a boring bar holder. This setup has some advantages over a classic tool post grinder, since it\u2019s easy to setup.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;69d8cd85d2e7a&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"69d8cd85d2e7a\" class=\"wp-block-image size-large wp-lightbox-container\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"577\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" data-id=\"63\" src=\"https:\/\/gtwr.de\/blog\/wp-content\/uploads\/2024\/12\/IMG_20230913_130536-1024x577.jpg\" alt=\"\" class=\"wp-image-63\" srcset=\"https:\/\/gtwr.de\/blog\/wp-content\/uploads\/2024\/12\/IMG_20230913_130536-1024x577.jpg 1024w, https:\/\/gtwr.de\/blog\/wp-content\/uploads\/2024\/12\/IMG_20230913_130536-300x169.jpg 300w, https:\/\/gtwr.de\/blog\/wp-content\/uploads\/2024\/12\/IMG_20230913_130536-768x433.jpg 768w, https:\/\/gtwr.de\/blog\/wp-content\/uploads\/2024\/12\/IMG_20230913_130536.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\taria-label=\"Enlarge\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.imageButtonRight\"\n\t\t\tdata-wp-style--top=\"state.imageButtonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n\n\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;69d8cd85d3165&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"69d8cd85d3165\" class=\"wp-block-image size-large wp-lightbox-container\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"708\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" data-id=\"64\" src=\"https:\/\/gtwr.de\/blog\/wp-content\/uploads\/2024\/12\/IMG_20230913_130538-1024x708.jpg\" alt=\"\" class=\"wp-image-64\" srcset=\"https:\/\/gtwr.de\/blog\/wp-content\/uploads\/2024\/12\/IMG_20230913_130538-1024x708.jpg 1024w, https:\/\/gtwr.de\/blog\/wp-content\/uploads\/2024\/12\/IMG_20230913_130538-300x207.jpg 300w, https:\/\/gtwr.de\/blog\/wp-content\/uploads\/2024\/12\/IMG_20230913_130538-768x531.jpg 768w, https:\/\/gtwr.de\/blog\/wp-content\/uploads\/2024\/12\/IMG_20230913_130538.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\taria-label=\"Enlarge\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.imageButtonRight\"\n\t\t\tdata-wp-style--top=\"state.imageButtonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n<\/figure>\n\n\n\n<p>Most standard belt driven tool post grinders are too big to mount into a quick change tool post, they require to be bolted to the compound directly.<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>There will be a moment in time in almost every lathe owners\u2019 career when the desire for a tool post grinder starts to grow. I have a strong opinion on tool post grinders, and it\u2019s not a good one. The idea: The reality: There are exceptions of course \u2013 Some materials just can not be [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[6,7],"class_list":["post-62","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-grinding","tag-tool-post-grinder"],"_links":{"self":[{"href":"https:\/\/gtwr.de\/blog\/wp-json\/wp\/v2\/posts\/62","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gtwr.de\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gtwr.de\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gtwr.de\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gtwr.de\/blog\/wp-json\/wp\/v2\/comments?post=62"}],"version-history":[{"count":1,"href":"https:\/\/gtwr.de\/blog\/wp-json\/wp\/v2\/posts\/62\/revisions"}],"predecessor-version":[{"id":65,"href":"https:\/\/gtwr.de\/blog\/wp-json\/wp\/v2\/posts\/62\/revisions\/65"}],"wp:attachment":[{"href":"https:\/\/gtwr.de\/blog\/wp-json\/wp\/v2\/media?parent=62"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gtwr.de\/blog\/wp-json\/wp\/v2\/categories?post=62"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gtwr.de\/blog\/wp-json\/wp\/v2\/tags?post=62"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}