{"id":781,"date":"2014-09-21T12:58:46","date_gmt":"2014-09-21T16:58:46","guid":{"rendered":"http:\/\/makelehighvalley.com\/blog\/?p=781"},"modified":"2014-09-21T12:58:46","modified_gmt":"2014-09-21T16:58:46","slug":"member-project-update-franks-filament-extruder-wip","status":"publish","type":"post","link":"http:\/\/makelehighvalley.com\/blog\/2014\/09\/member-project-update-franks-filament-extruder-wip\/","title":{"rendered":"Member Project Update: Frank’s Filament Extruder (WIP)"},"content":{"rendered":"

Hi All, the following is an update the Make Lehigh Valley Filament Extruder Project<\/em>. \u00a0Thus far, the concept has been demonstrated successfully with production of several meters of ABS filament!!!<\/strong><\/p>\n

The emphasis on the project at this stage is determining fundamental parameters for operation of key sections of the design. \u00a0Key sections of the project include; nozzle design<\/strong> (nozzle diameter, length, inlet & outlet shape), material heater body design<\/strong> (single stage vs. multistage heating, heater element design including material, voltage, current, insulation), extruder design<\/strong> (length of extruder, hopper geometry) and drive mechanism<\/strong> (gear reduction, clutch, drive motor options).<\/p>\n

Safety is a key design consideration for the project. \u00a0For example, low voltages are planned for powering of the heater element along with interlocks to protect against extruder or motor overload.<\/p>\n

Next steps include; refinement of the heater element, incorporation of automatic heater control and testing of motor drive options. Once these items are tested satisfactorily, more sophisticated automation is planned. \u00a0The automation is expected to include an integrated control scheme incorporating heater controls, clutch slippage detection, drive motor controls and hopper feed sensing and controls<\/strong>. \u00a0Control platform and sensor options are still under review with the emphasis on safety, open source, simplicity, availability, cost and reliability.<\/p>\n

Additional project details are provided in previous posts.<\/p>\n

Comments and suggestions welcomed!<\/p>\n

Frank Lyter<\/p>\n

\"Prototype<\/a>
Repurposed oven heater element<\/strong> – prototype heater used to refine heater design requirements<\/figcaption><\/figure>\n
\"Final<\/a>
Heater fit up to nozzle<\/strong> – one of several bend configuration under consideration<\/figcaption><\/figure>\n
\"Extruder<\/a>
Extruder heater test to evaluate operating voltages and currents<\/figcaption><\/figure>\n
\"Extruder<\/a>
Autotransformer used for voltage and amp evaluation<\/figcaption><\/figure>\n
\"Heater<\/a>
Heater element attached to extruder<\/strong> – subsequently covered in fiberglass insulation.<\/figcaption><\/figure>\n
\"First<\/a>
First filament production!!!<\/strong> Evaluation ongoing for optimum temperatures and pressures – sections with bubbles are when temperature was too high<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"

Hi All, the following is an update the Make Lehigh Valley Filament Extruder Project. \u00a0Thus far, the concept has been demonstrated successfully with production of …<\/p>\n","protected":false},"author":40,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[13],"tags":[113,135,137,134,136,18],"class_list":["post-781","post","type-post","status-publish","format-standard","hentry","category-member-projects","tag-3d-printer","tag-abs","tag-extruder","tag-filament","tag-pla","tag-project"],"yoast_head":"\nMake Lehigh Valley :: Member Project Update: Frank's Filament Extruder (WIP)<\/title>\n<meta name=\"description\" content=\"plastic extruder for making filaments used in 3d printers\" \/>\n<meta name=\"robots\" content=\"index, follow, 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