{"id":519,"date":"2019-03-07T21:00:27","date_gmt":"2019-03-07T21:00:27","guid":{"rendered":"http:\/\/www.wis.co.uk\/blog\/?p=519"},"modified":"2019-03-14T22:45:32","modified_gmt":"2019-03-14T22:45:32","slug":"a-3d-printer-diary-clogged-nozzle","status":"publish","type":"post","link":"https:\/\/www.wis.co.uk\/blog\/a-3d-printer-diary-clogged-nozzle","title":{"rendered":"A 3D printer diary \u2013 clogged nozzle"},"content":{"rendered":"\n<p>After <a href=\"https:\/\/www.wis.co.uk\/blog\/a-3d-printer-diary-getting-going-again\">printing a stringy mess<\/a>, the nozzle of my 3D20 is covered in goo (filament). At room temperature, it&#8217;s a nice hard crusty smooth goo. The instructions explain how to clean the nozzle. <a href=\"https:\/\/www.youtube.com\/watch?v=eyLxILFKFME\">There&#8217;s a nice video<\/a> (with jolly music) that shows how to do it too:<\/p>\n\n\n\n<ul><li>Put the printer in heat mode to get the nozzle up to the correct temperature.<\/li><li>Don&#8217;t touch the nozzle &#8211; it&#8217;s 220 degrees C.<\/li><li>Remove filament from the top of the print head.<\/li><li>Don&#8217;t touch the nozzle. It&#8217;s hot.<\/li><li>Let the filament ooze through the nozzle for a bit.<\/li><li>Did we say the nozzle is hot?<\/li><li>Poke the cleaning tool in at the top and push out any filament.<\/li><\/ul>\n\n\n\n<p>I did this, and the cleaning tool went quite deep into the print head, almost to the nozzle. Then I pulled the cleaning tool out, and as I did so, I realised something had gone wrong. It felt like filament had been pulled out with the cleaning tool. I tried poking the cleaning tool in again, and it wouldn&#8217;t go. I guessed that the filament had solidified on the top of the metal part of the print head. <\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" width=\"637\" height=\"257\" src=\"https:\/\/www.wis.co.uk\/blog\/wp-content\/uploads\/2019\/03\/Screenshot-2019-03-14-at-22.05.24.png\" alt=\"\" class=\"wp-image-520\" srcset=\"https:\/\/www.wis.co.uk\/blog\/wp-content\/uploads\/2019\/03\/Screenshot-2019-03-14-at-22.05.24.png 637w, https:\/\/www.wis.co.uk\/blog\/wp-content\/uploads\/2019\/03\/Screenshot-2019-03-14-at-22.05.24-300x121.png 300w\" sizes=\"(max-width: 637px) 100vw, 637px\" \/><figcaption>Schematic showing filament (in green for this diagram)<\/figcaption><\/figure>\n\n\n\n<p>As expected, I&#8217;m not the first to experience problems like this. <a href=\"https:\/\/www.youtube.com\/watch?v=aHro-SGqCj8\">Here is a video<\/a>, (with no sound), showing how to dismantle the print feeder, to get at the print head. Be careful not to loose the nylon spacers behind the heat-sink, behind the fan.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" width=\"1024\" height=\"768\" src=\"https:\/\/www.wis.co.uk\/blog\/wp-content\/uploads\/2019\/03\/IMG_0770-1024x768.jpg\" alt=\"\" class=\"wp-image-521\" srcset=\"https:\/\/www.wis.co.uk\/blog\/wp-content\/uploads\/2019\/03\/IMG_0770-1024x768.jpg 1024w, https:\/\/www.wis.co.uk\/blog\/wp-content\/uploads\/2019\/03\/IMG_0770-300x225.jpg 300w, https:\/\/www.wis.co.uk\/blog\/wp-content\/uploads\/2019\/03\/IMG_0770-768x576.jpg 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption>Photo showing my blocked print head (looking down on the steel print head). The blob of filament is white.<\/figcaption><\/figure>\n\n\n\n<p>With filament back in the machine, a print job could be started.  The results are shown below, and I&#8217;ll talk more about it in the next post.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" width=\"1024\" height=\"768\" src=\"https:\/\/www.wis.co.uk\/blog\/wp-content\/uploads\/2019\/03\/IMG_0784-1024x768.jpg\" alt=\"\" class=\"wp-image-524\" srcset=\"https:\/\/www.wis.co.uk\/blog\/wp-content\/uploads\/2019\/03\/IMG_0784-1024x768.jpg 1024w, https:\/\/www.wis.co.uk\/blog\/wp-content\/uploads\/2019\/03\/IMG_0784-300x225.jpg 300w, https:\/\/www.wis.co.uk\/blog\/wp-content\/uploads\/2019\/03\/IMG_0784-768x576.jpg 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption>3D printed version on the left in white.<br>Original (injection-moulded ABS) on the right in yellow.<\/figcaption><\/figure>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>After printing a stringy mess, the nozzle of my 3D20 is covered in goo (filament). At room temperature, it&#8217;s a nice hard crusty smooth goo. The instructions explain how to clean the nozzle. There&#8217;s a nice video (with jolly music) &hellip; <a href=\"https:\/\/www.wis.co.uk\/blog\/a-3d-printer-diary-clogged-nozzle\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[19],"tags":[25,49],"_links":{"self":[{"href":"https:\/\/www.wis.co.uk\/blog\/wp-json\/wp\/v2\/posts\/519"}],"collection":[{"href":"https:\/\/www.wis.co.uk\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wis.co.uk\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wis.co.uk\/blog\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wis.co.uk\/blog\/wp-json\/wp\/v2\/comments?post=519"}],"version-history":[{"count":3,"href":"https:\/\/www.wis.co.uk\/blog\/wp-json\/wp\/v2\/posts\/519\/revisions"}],"predecessor-version":[{"id":531,"href":"https:\/\/www.wis.co.uk\/blog\/wp-json\/wp\/v2\/posts\/519\/revisions\/531"}],"wp:attachment":[{"href":"https:\/\/www.wis.co.uk\/blog\/wp-json\/wp\/v2\/media?parent=519"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wis.co.uk\/blog\/wp-json\/wp\/v2\/categories?post=519"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wis.co.uk\/blog\/wp-json\/wp\/v2\/tags?post=519"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}