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PI*KnobDiameter; Knurls = round(KnobCircumference/DistanceBetweenKnurls); Divot=CapType; TaperAngle=asin(KnobHeight / (sqrt(pow(KnobHeight, 2) + pow(KnobMajorRadius-KnobMinorRadius,2)))) - 90; hole_bottom = hole_top - 90; DivotRadius = KnobMinorRadius*.4; // Primary knob cylinder for (i=[0 : Knurls-1] rotate([0, 0, 90]) // To align a face is not possible or desirable to put the output jacks bottom_row = v_margin + 12; row_2 = row_1 + v_margin + 12; //knob_radius top_row = height - v_margin*2 - title_font_size; working_increment = working_height / (8+tolerance/5); // generally-useful spacing amount for vertical columns of stuff // step rotary switch with Signal Lamp, generic K switch normally-open pushbutton push-button Side push button (https://www.alps.com/prod/info/E/PDF/Tact/SurfaceMount/SKRT/SKRT.pdf push horizontal SPST 1P1T straight NO SMTR C&K E-Switch sub miniature slide switch, right-angle, http://www.ckswitches.com/media/1422/js.pdf switch spdt 0 3 3 Button_Switch_SMD SW_SPDT_PCM12 Ultraminiature Surface Mount Tactile Switch with High Contact Reliability, Top-actuated Model.

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