Knob - Mingda Magician Series

prusaprinters

<p><strong>Mingda Magician Series - Extruder Tensioning Screw</strong> … Original - hate/hate relationship. Screw too short , head diameter too small - makes installing with filament already loaded nearly impossible (for me) to screw in. Added retainer washer to captivate knob assy (improved quality of life !). No more hate/hate relationship.</p><p>Here's an even <a href="https://www.printables.com/model/322855-large-knob-tensioner-screw-mingda-magician-series">larger knob</a> if you need one !!</p><p><strong>V4</strong> - Print this part and screw in a m3 x 30mm socket head cap screw into a recessed m3 hex nut, add 2 additional m3 hex nuts, &nbsp;and reuse original spring and washer.&nbsp;</p><p><strong>V3</strong> - Print this part and screw in a m3 x 25mm socket head cap screw, and reuse original spring and washer.&nbsp;</p><p>Retainer Washer Video - <a href="https://imgur.com/X9kIrXN">https://imgur.com/X9kIrXN</a></p><p>-------------------------------------------------------------------------------------------------------------</p><p><i>Revision History -&nbsp;</i></p><p><i><strong>Updated 10/27/22</strong></i>&nbsp;</p><ul><li><i><strong>Retaining Washer V2</strong></i> - revised to be larger and thinner. Just seems to work better for me.</li></ul><p><i><strong>Updated 10/26/22</strong></i>&nbsp;</p><ul><li><i><strong>Knob V4</strong></i> - redesigned to accept m3 nut recessed on back side to prevent screw from spinning in knob. Uses 30mm long screw, so 2 additional m3 nuts required for appropriate length &nbsp;of thread.</li></ul><p>Updated 7/7/22&nbsp;</p><ul><li>Knob V3 - design style like Y belt tension knob, made 0.5 mm thinner (difference on screw head side)</li><li>Retaining Washer V1 - New</li></ul><p>Updated 5/31/22&nbsp;</p><ul><li>Knob V2 - larger diameter, tighter fit on screw.</li></ul><p>&nbsp;</p><p>&nbsp;</p>