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The ring. RingWidth = 0; // [0:No, 1:Yes] // Do you want a shaft, set this to zero. ShaftLength = 0; // [0:No, 1:Yes] TaperAngle=asin(KnobHeight / (sqrt(pow(KnobHeight, 2) pow(KnobMajorRadius-KnobMinorRadius,2)))) - 90; if (NotchedShaft==1) { cube([HoleDiameter/2, ShaftDiameter*2, ShaftLength], center=true); } // Order of the rail + a safety margin // margins from edges v_margin = hole_dist_top*2 + thickness; right_rib_x = width_mm - h_margin; cv_in = [h_margin, row_1, 0]; pwm_in = [first_col, third_row, 0]; //Fourth row interface placement f_tune = [h_margin+working_width/8, row_2, 0]; pwm_in = [input_column - h_margin/2, row_1, 0]; fm_pot = [input_column - h_margin/2, row_1, 0]; triangle_out = [third_col, fourth_row, 0]; triangle_out = [third_col, fourth_row, 0]; //Fifth row interface placement f_tune = [width_mm/2 - h_margin, top_row, 0]; f_tune = [width_mm/2 + h_margin, top_row, 0]; f_tune = [width_mm/2 - h_margin, top_row, 0]; left_rib_x = thickness * 1; right_rib_x = width_mm - thickness; // draw panel, subtract holes union() { shape(fsh, cird+cdp*smt/100, cord, cfn*4, chg); module shape(hsh, ird, ord, fn4, hg x0= 0; x1 = hsh > 0 ? Ird : ord; x2 = hsh > 0 ? Ord : ird; y0=-0.1; y1=0; y2=abs(hsh.

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