<p>Based on http://<a rel="nofollow" target="_blank" href="http://www.youmagine.com/designs/ultimaker-2-knob--2">www.youmagine.com/designs/ultimaker-2-knob--2</a></p><p>I redesinged fillets a bit and made it a little smaller in diameter because original design turned out to turn a bit strong, at least in my Ultimaker 2.</p><p>Printed with "Innofil Ice Blue" transparent filament.<br>For slicing I used Simplify3D to be able to make solid infills concentric. That way the glow effect looks much nicer than with rectilinear infill.<br>Other settings so that there is no infill in the part itself. </p><p>To get out the original knob I used a small screw driver, there is a small hole on the inner side of the knob surrounding, see picture.<br>Then push the knob out carefully. Push it a bit, then turn it 180 degrees so it does not jam until it comes out.</p>
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