MMU2 Idler Tensioner Knobs

prusaprinters

<p><strong>MMU2 Idler Tensioner Knob</strong></p><p>Created a knob for quick access to open the MMU for servicing. (i.e. jams / re-seating broken filament / adjusting the tension force) &nbsp;Having knobs eliminates the need to use an Allen or Hex key to open the MMU every time there is an issue. &nbsp;</p><ul><li>A knob also allows for fine tune adjustment easily,</li></ul><p>The knob replaces the existing M3x30 screws with M3x40 screws that you likely have in your spare parts bag.</p><p>The model is created using filament swaps on a single extruder setup. &nbsp;The reason for this, is to have a visual gauge of where to initially seat the knob (The red represents the original M3x30 screw head). &nbsp;</p><p>Original M3x30 screw head is just below the surface of the housing. &nbsp;Having a visual guide helps initially align the tension / position.</p><p>There is a simply L / T indicator for Looser / Tighter. &nbsp;(But really not needed) &nbsp;For that reason - the model is printed upside down with supports. &nbsp;(you could print it without supports by eliminating the text and flipping it upside down)</p><p>Once printed - simply use a screw gun / electric screw driver or drill (on low speed) to install the M3x<strong>40</strong> screw. &nbsp;You will be able to feel when the screw head bottoms out. &nbsp;It is designed to be a very tight fit, without having to use glue to keep the screw in place.</p><p>You can compare the screw length from the M3x30 to the newly printed M3x40 screw as shown in the pic. (M3x30-M3x40_Compare.jpg)</p><p>Reuse original tensioner spring. &nbsp;(Original Tensioner Screw Image provided for reference)</p><ul><li><strong>Original sliced G-Code has filament swaps and is set for PLA @ 3mm height. &nbsp;</strong></li></ul><p><strong>(May re-slice the original file if you do not want the color swap)</strong></p><ul><li>Sliced using .4mm nozzle @ .010mm step heights.</li></ul><p>&nbsp;</p>