{"id":1270,"date":"2010-09-19T15:49:59","date_gmt":"2010-09-19T20:49:59","guid":{"rendered":"http:\/\/thmsblog.tedatum.com\/?p=1270"},"modified":"2010-09-19T15:59:32","modified_gmt":"2010-09-19T20:59:32","slug":"sine-of-45","status":"publish","type":"post","link":"https:\/\/blog.thehobbyistmachineshop.com\/?p=1270","title":{"rendered":"Sine of 45"},"content":{"rendered":"<!-- index.php -->\n<div\n\tclass=\"ngg-galleryoverview ngg-ajax-pagination-none\"\n\tid=\"ngg-gallery-ee16832ddcb12154e0041ba53ca8bed4-1\">\n\n    \t<div class=\"slideshowlink\">\n        <a href='https:\/\/blog.thehobbyistmachineshop.com\/index.php\/nggallery\/slideshow?p=1270'>[Show as slideshow]<\/a>\n\t\t\n\t<\/div>\n\t\t\t<!-- Thumbnails -->\n\t\t\t\t<div id=\"ngg-image-0\" class=\"ngg-gallery-thumbnail-box\" >\n\t\t\t\t        <div class=\"ngg-gallery-thumbnail\">\n            <a href=\"https:\/\/blog.thehobbyistmachineshop.com\/wp-content\/gallery\/sine45\/dsc02199.jpg\"\n               title=\"\"\n             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>\n\t\t\t\t        <div class=\"ngg-gallery-thumbnail\">\n            <a href=\"https:\/\/blog.thehobbyistmachineshop.com\/wp-content\/gallery\/sine45\/dsc02200.jpg\"\n               title=\"\"\n               data-src=\"https:\/\/blog.thehobbyistmachineshop.com\/wp-content\/gallery\/sine45\/dsc02200.jpg\"\n               data-thumbnail=\"https:\/\/blog.thehobbyistmachineshop.com\/wp-content\/gallery\/sine45\/thumbs\/thumbs_dsc02200.jpg\"\n               data-image-id=\"143\"\n               data-title=\"dsc02200\"\n               data-description=\"\"\n               data-image-slug=\"dsc02200\"\n               class=\"ngg-fancybox\" rel=\"ee16832ddcb12154e0041ba53ca8bed4\">\n                <img\n                    title=\"dsc02200\"\n                    alt=\"dsc02200\"\n                    src=\"https:\/\/blog.thehobbyistmachineshop.com\/wp-content\/gallery\/sine45\/thumbs\/thumbs_dsc02200.jpg\"\n                    width=\"99\"\n                    height=\"75\"\n                    style=\"max-width:100%;\"\n                \/>\n            <\/a>\n        <\/div>\n\t\t\t\t\t\t\t<\/div> \n\t\t\t\n        \n\t\t\t\t<div id=\"ngg-image-2\" class=\"ngg-gallery-thumbnail-box\" >\n\t\t\t\t        <div class=\"ngg-gallery-thumbnail\">\n            <a href=\"https:\/\/blog.thehobbyistmachineshop.com\/wp-content\/gallery\/sine45\/dsc02201.jpg\"\n               title=\"\"\n               data-src=\"https:\/\/blog.thehobbyistmachineshop.com\/wp-content\/gallery\/sine45\/dsc02201.jpg\"\n               data-thumbnail=\"https:\/\/blog.thehobbyistmachineshop.com\/wp-content\/gallery\/sine45\/thumbs\/thumbs_dsc02201.jpg\"\n               data-image-id=\"144\"\n               data-title=\"dsc02201\"\n               data-description=\"\"\n               data-image-slug=\"dsc02201\"\n               class=\"ngg-fancybox\" rel=\"ee16832ddcb12154e0041ba53ca8bed4\">\n                <img\n                    title=\"dsc02201\"\n                    alt=\"dsc02201\"\n                  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              class=\"ngg-fancybox\" rel=\"ee16832ddcb12154e0041ba53ca8bed4\">\n                <img\n                    title=\"dsc02202\"\n                    alt=\"dsc02202\"\n                    src=\"https:\/\/blog.thehobbyistmachineshop.com\/wp-content\/gallery\/sine45\/thumbs\/thumbs_dsc02202.jpg\"\n                    width=\"100\"\n                    height=\"75\"\n                    style=\"max-width:100%;\"\n                \/>\n            <\/a>\n        <\/div>\n\t\t\t\t\t\t\t<\/div> \n\t\t\t\n        \n\t\t\t\t<div id=\"ngg-image-4\" class=\"ngg-gallery-thumbnail-box\" >\n\t\t\t\t        <div class=\"ngg-gallery-thumbnail\">\n            <a href=\"https:\/\/blog.thehobbyistmachineshop.com\/wp-content\/gallery\/sine45\/dsc02203.jpg\"\n               title=\"\"\n               data-src=\"https:\/\/blog.thehobbyistmachineshop.com\/wp-content\/gallery\/sine45\/dsc02203.jpg\"\n               data-thumbnail=\"https:\/\/blog.thehobbyistmachineshop.com\/wp-content\/gallery\/sine45\/thumbs\/thumbs_dsc02203.jpg\"\n               data-image-id=\"146\"\n               data-title=\"dsc02203\"\n               data-description=\"\"\n               data-image-slug=\"dsc02203\"\n               class=\"ngg-fancybox\" rel=\"ee16832ddcb12154e0041ba53ca8bed4\">\n                <img\n                    title=\"dsc02203\"\n                    alt=\"dsc02203\"\n                    src=\"https:\/\/blog.thehobbyistmachineshop.com\/wp-content\/gallery\/sine45\/thumbs\/thumbs_dsc02203.jpg\"\n                    width=\"100\"\n                    height=\"75\"\n                    style=\"max-width:100%;\"\n                \/>\n            <\/a>\n        <\/div>\n\t\t\t\t\t\t\t<\/div> \n\t\t\t\n        \n\t\t\t\t<div id=\"ngg-image-5\" class=\"ngg-gallery-thumbnail-box\" >\n\t\t\t\t        <div class=\"ngg-gallery-thumbnail\">\n            <a href=\"https:\/\/blog.thehobbyistmachineshop.com\/wp-content\/gallery\/sine45\/dsc02205.jpg\"\n               title=\"\"\n               data-src=\"https:\/\/blog.thehobbyistmachineshop.com\/wp-content\/gallery\/sine45\/dsc02205.jpg\"\n               data-thumbnail=\"https:\/\/blog.thehobbyistmachineshop.com\/wp-content\/gallery\/sine45\/thumbs\/thumbs_dsc02205.jpg\"\n               data-image-id=\"147\"\n               data-title=\"dsc02205\"\n               data-description=\"\"\n               data-image-slug=\"dsc02205\"\n               class=\"ngg-fancybox\" rel=\"ee16832ddcb12154e0041ba53ca8bed4\">\n                <img\n                    title=\"dsc02205\"\n                    alt=\"dsc02205\"\n                    src=\"https:\/\/blog.thehobbyistmachineshop.com\/wp-content\/gallery\/sine45\/thumbs\/thumbs_dsc02205.jpg\"\n                    width=\"99\"\n                    height=\"75\"\n                    style=\"max-width:100%;\"\n                \/>\n            <\/a>\n        <\/div>\n\t\t\t\t\t\t\t<\/div> \n\t\t\t\n        \n\t\t\n\t\t<!-- Pagination -->\n\t<div class='ngg-clear'><\/div>\t<\/div>\n\n<p>I know most of my readers like action shots. Here are a few to keep the juices flowing. It&#8217;s just one very tiny step in the making of parts, but there is a bit of interesting machine set up going on here.<\/p>\n<p>I had to cut a 3\/32&#8243; wide x 45 deg. chamfer on the one end of both of the two brackets I made for the tender steps. That doesn&#8217;t sound like much of a job, does it?<\/p>\n<p>I priced 45 degree end mills and after I got back off the floor, I decided that wasn&#8217;t the least expensive way to run this job. At least for the two tiny cuts I needed to make. A file might work but it would look like&#8230; well you know, the smelly stuff.<\/p>\n<p>I dusted off the sine vise and although it seemed like massive overkill, it wasn&#8217;t all that hard to set up. The fun part was I was able to do a little math and I actually like math. The reason it is called a sine vice is the height of the spacers (called sine blocks) is the <strong>sine of the angle<\/strong> desired times the distance away from the hinge.<\/p>\n<p>Here I wanted 45 degrees, and the sine of 45 is <span style=\"color: #993300;\"><em>sin(degrees(45)) = 0.70710678. <\/em><span style=\"color: #000000;\">I used o.707 as close enough. I have a 4 inch sine vice so the stack of blocks needs to be 0.707 x 4 = 2.828 inches. You can see that number on the top of the pink notepad in one picture. I rounded to 2.830 just to make it easier to build the stack and still be plenty (over) accurate for this task.<\/span><\/span><\/p>\n<p><span style=\"color: #993300;\"><span style=\"color: #000000;\">Two 1.000 inch, one .700 inch, and one .130 inch block does the job. The actual machining seemed trivial as it usually does. \ud83d\ude42<br \/>\n<\/span><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>I know most of my readers like action shots. Here are a few to keep the juices flowing. It&#8217;s just one very tiny step in the making of parts, but there is a bit of interesting machine set up going on here. I had to cut a 3\/32&#8243; wide x 45 deg. chamfer on the [&hellip;]<\/p>\n","protected":false},"author":77778,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0},"categories":[84],"tags":[82,79,81,50,54,47],"_links":{"self":[{"href":"https:\/\/blog.thehobbyistmachineshop.com\/index.php?rest_route=\/wp\/v2\/posts\/1270"}],"collection":[{"href":"https:\/\/blog.thehobbyistmachineshop.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.thehobbyistmachineshop.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.thehobbyistmachineshop.com\/index.php?rest_route=\/wp\/v2\/users\/77778"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.thehobbyistmachineshop.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1270"}],"version-history":[{"count":0,"href":"https:\/\/blog.thehobbyistmachineshop.com\/index.php?rest_route=\/wp\/v2\/posts\/1270\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.thehobbyistmachineshop.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1270"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.thehobbyistmachineshop.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1270"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.thehobbyistmachineshop.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1270"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}