{"id":340,"date":"2012-03-05T12:06:48","date_gmt":"2012-03-05T18:06:48","guid":{"rendered":"http:\/\/www.goodjobsucking.com\/?p=340"},"modified":"2012-03-05T12:06:48","modified_gmt":"2012-03-05T18:06:48","slug":"3d-printing-a-comedy-of-errors","status":"publish","type":"post","link":"http:\/\/www.goodjobsucking.com\/?p=340","title":{"rendered":"3D Printing &#8212; A Comedy of Errors"},"content":{"rendered":"<div id=\"attachment_342\" style=\"width: 310px\" class=\"wp-caption alignright\"><a href=\"http:\/\/www.goodjobsucking.com\/wp-content\/uploads\/2012\/03\/HPIM4614.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-342\" class=\"size-medium wp-image-342\" title=\"Printing a Proper Raft on a Makerbot Thing-O-Matic\" src=\"http:\/\/www.goodjobsucking.com\/wp-content\/uploads\/2012\/03\/HPIM4614-300x224.jpg\" alt=\"Printing a Proper Raft on a Makerbot Thing-O-Matic\" width=\"300\" height=\"224\" srcset=\"http:\/\/www.goodjobsucking.com\/wp-content\/uploads\/2012\/03\/HPIM4614-300x224.jpg 300w, http:\/\/www.goodjobsucking.com\/wp-content\/uploads\/2012\/03\/HPIM4614-1024x766.jpg 1024w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-342\" class=\"wp-caption-text\">Printing a Proper Raft on a Makerbot Thing-O-Matic<\/p><\/div>\n<p>I recently acquired a <a title=\"Makerbot Thing-O-Matic\" href=\"http:\/\/wiki.makerbot.com\/thingomatic\">Makerbot Thing-O-Matic<\/a>, a printer I selected due to its apparent ubiquity and to its price &#8212; under $1000 if you do the assembly yourself.\u00a0 With the heady optimism and overconfidence borne of having not yet attempted something, I dove in with my boxes of parts and wiki instructions.\u00a0 Besides, I build stuff all the time, which is the point of having a 3D printer in the first place.<\/p>\n<p>Another appeal of a largely community-supported machine is the lack of need to talk to tech support, which is usually a dismal experience.\u00a0 I contacted a tech support for a popular anti-virus program which would occasionally inexplicably shut down when I was using it on public networks.\u00a0 Tech support&#8217;s answer: don&#8217;t use public networks.<\/p>\n<p>At any rate, aside from backtracking a few times (the combination of extra parts and following some outdated instructions led to a few false starts, and a quirk or two of design, assembling the little beast wasn&#8217;t a problem.\u00a0 I didn&#8217;t start causing my own problems until I actually started printing.<\/p>\n<p>I calibrated and made little adjustments in order to improve my print quality:<\/p>\n<ul>\n<li>The stepper extruder didn&#8217;t have enough clearance to grip the filament, so I removed a washer<\/li>\n<li>The extruder had trouble pushing the plastic through, so I increased the temperature<\/li>\n<li>The raft was blobby, so I lowered the nozzle relative to the build platform<\/li>\n<li>The raft didn&#8217;t stick to the build platform, so I raised the temperature of the build platform<\/li>\n<\/ul>\n<p>After all this tweaking and adjusting, I was able to print some pretty good looking calibration cubes, that more or less looked like the pictures I was seeing on the web.\u00a0 However, absolutely all of these adjustments were <em>exactly the wrong thing to do<\/em>.\u00a0 I had managed to put together a set of tweaks that made fairly good, accurate prints, that warped crazily as soon as they were finished.<\/p>\n<ul>\n<li>The stepper extruder doesn&#8217;t have much clearance for the filament because it grips the filament <em>very<\/em> tightly.\u00a0 The filament should have bite marks from the extruder.\u00a0 Putting the washer back in, I cut the filament in a &#8220;v&#8221; shape before feeding it in so that it could be gripped.<\/li>\n<li>Turns out I could actually<em> lower<\/em> the temperature of the extruder, now not having any trouble pushing filament through the nozzle.<\/li>\n<li>Having the nozzle so close to the build platform was pressing the raft right into whatever I was printing.\u00a0 Raising the nozzle opened up the raft and allowed it to actually come off.<\/li>\n<li>With the nozzle farther away from the build platform, it no longer tended to drag the plastic away from the platform, and the platform temperature could be lowered as well.<\/li>\n<\/ul>\n<p>Weirdly, even with things boldly out of whack, I was able to produce some very good prints, although they took a lot of clean-up and sanding, and warping was a real issue.\u00a0 The look of things hasn&#8217;t changed much, but less clean-up is necessary and less warping means more things will actually come out shaped closer to how they were designed.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I recently acquired a Makerbot Thing-O-Matic, a printer I selected due to its apparent ubiquity and to its price &#8212; under $1000 if you do the assembly yourself.\u00a0 With the heady optimism and overconfidence borne of having not yet attempted something, I dove in with my boxes of parts and \u2026 <a class=\"continue-reading-link\" href=\"http:\/\/www.goodjobsucking.com\/?p=340\"> Continue reading <span class=\"meta-nav\">&rarr; <\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,2],"tags":[],"_links":{"self":[{"href":"http:\/\/www.goodjobsucking.com\/index.php?rest_route=\/wp\/v2\/posts\/340"}],"collection":[{"href":"http:\/\/www.goodjobsucking.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.goodjobsucking.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.goodjobsucking.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.goodjobsucking.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=340"}],"version-history":[{"count":2,"href":"http:\/\/www.goodjobsucking.com\/index.php?rest_route=\/wp\/v2\/posts\/340\/revisions"}],"predecessor-version":[{"id":343,"href":"http:\/\/www.goodjobsucking.com\/index.php?rest_route=\/wp\/v2\/posts\/340\/revisions\/343"}],"wp:attachment":[{"href":"http:\/\/www.goodjobsucking.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=340"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.goodjobsucking.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=340"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.goodjobsucking.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=340"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}