{"id":196,"date":"2009-12-22T22:18:02","date_gmt":"2009-12-23T05:18:02","guid":{"rendered":"http:\/\/www.f15sim.com\/?p=196"},"modified":"2009-12-22T22:18:02","modified_gmt":"2009-12-23T05:18:02","slug":"constructing-the-sfs-box-part-2-5","status":"publish","type":"post","link":"https:\/\/www.f15sim.com\/?p=196","title":{"rendered":"Constructing the SFS box, Part 2.5"},"content":{"rendered":"<p>I went to my local acrylic monger yesterday and was captivated by this huge block of gray <a href=\"http:\/\/en.wikipedia.org\/wiki\/Ultra_high_molecular_weight_polyethylene\" target=\"_blank\">UHMW<\/a>.\u00a0 It was _begging_ to become an SFS box.<\/p>\n<p>The block was about 10 inches long, 8 inches wide and 2.5 inches thick.\u00a0 I needed to pare it down to 1.75&#8243; thick first&#8230;<\/p>\n<p><a href=\"https:\/\/www.f15sim.com\/wp-content\/uploads\/2009\/12\/cutting-uhmw-sfs-box-1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-197\" title=\"cutting uhmw sfs box 1\" src=\"https:\/\/www.f15sim.com\/wp-content\/uploads\/2009\/12\/cutting-uhmw-sfs-box-1.jpg\" alt=\"\" width=\"640\" height=\"426\" \/><\/a><\/p>\n<p>You can see the UHMW chips flying away from the cutter.\u00a0 I&#8217;m using a .50&#8243; downshear cutter running at 12,000 RPM with a feed rate of 1.7in\/sec.\u00a0 That cutter is an _animal_ in this stuff.\u00a0 I&#8217;ve never cut UHMW before and it was definately an experience I won&#8217;t soon forget.\u00a0 I&#8217;ll be cleaning up little bits of gray plastic <a href=\"http:\/\/en.wikipedia.org\/wiki\/Swarf\" target=\"_blank\">swarf<\/a> for the rest of my life I think.<\/p>\n<p>Now we get on to the interior of the SFS box&#8230;<\/p>\n<p><a href=\"https:\/\/www.f15sim.com\/wp-content\/uploads\/2009\/12\/cutting-uhmw-sfs-box-2.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-198\" title=\"cutting uhmw sfs box 2\" src=\"https:\/\/www.f15sim.com\/wp-content\/uploads\/2009\/12\/cutting-uhmw-sfs-box-2.jpg\" alt=\"\" width=\"640\" height=\"426\" \/><\/a><\/p>\n<p>All during the cutting process, I was trying to suck up as much of the swarf as I could with a narrow shop-vac hose.\u00a0 The best I could do is keep the stuff from clogging the cutter&#8230;<\/p>\n<p><a href=\"https:\/\/www.f15sim.com\/wp-content\/uploads\/2009\/12\/cutting-uhmw-sfs-box-3.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-199\" title=\"cutting uhmw sfs box 3\" src=\"https:\/\/www.f15sim.com\/wp-content\/uploads\/2009\/12\/cutting-uhmw-sfs-box-3.jpg\" alt=\"\" width=\"640\" height=\"426\" \/><\/a><\/p>\n<p>All done!\u00a0 What a f*cking mess. *sigh*\u00a0 The block of material has been glued down to a sheet of scrap plywood with 3M 77 spray adhesive.\u00a0 Worked great!<\/p>\n<p>Here&#8217;s the end results:<\/p>\n<p><a href=\"https:\/\/www.f15sim.com\/wp-content\/uploads\/2009\/12\/cutting-uhmw-sfs-box-4.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-201\" title=\"cutting uhmw sfs box 4\" src=\"https:\/\/www.f15sim.com\/wp-content\/uploads\/2009\/12\/cutting-uhmw-sfs-box-4.jpg\" alt=\"\" width=\"640\" height=\"426\" \/><\/a><\/p>\n<p><a href=\"https:\/\/www.f15sim.com\/wp-content\/uploads\/2009\/12\/uhmw-sfs-box.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-200\" title=\"uhmw sfs box\" src=\"https:\/\/www.f15sim.com\/wp-content\/uploads\/2009\/12\/uhmw-sfs-box.jpg\" alt=\"\" width=\"640\" height=\"426\" \/><\/a><\/p>\n<p>I really don&#8217;t care for the finish the cutter left on the box so this will likely be just a fun paper weight.\u00a0 Tomorrow I&#8217;ll get the .062&#8243; aluminum cover plates made&#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I went to my local acrylic monger yesterday and was captivated by this huge block of gray UHMW.\u00a0 It was _begging_ to become an SFS box. The block was about 10 inches long, 8 inches wide and 2.5 inches thick.\u00a0 I needed to pare it down to 1.75&#8243; thick first&#8230; You can see the UHMW [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-196","post","type-post","status-publish","format-standard","hentry","category-project-updates"],"_links":{"self":[{"href":"https:\/\/www.f15sim.com\/index.php?rest_route=\/wp\/v2\/posts\/196","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.f15sim.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.f15sim.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.f15sim.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.f15sim.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=196"}],"version-history":[{"count":2,"href":"https:\/\/www.f15sim.com\/index.php?rest_route=\/wp\/v2\/posts\/196\/revisions"}],"predecessor-version":[{"id":203,"href":"https:\/\/www.f15sim.com\/index.php?rest_route=\/wp\/v2\/posts\/196\/revisions\/203"}],"wp:attachment":[{"href":"https:\/\/www.f15sim.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=196"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.f15sim.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=196"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.f15sim.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=196"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}