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Vertical_space/7; row_7 = row_6 + vertical_space/7; row_6 = row_5 + vertical_space/7; cv_in_1a = [left_col, row_5, 0]; cv_in_2a = [left_col, row_3, 0]; cv_in_2b = [right_col, row_7, 0]; audio_out_1 = [right_col, row_6, 0]; cv_1b_atten = [right_col, row_5, 0]; cv_in_2a = [left_col, row_7, 0]; manual_1 = [left_col, row_6, 0]; cv_1b_atten = [right_col, row_1, 0]; triangle_out = [output_column, row_2, 0]; audio_in_2 = [left_col, row_3, 0]; cv_in_2b = [right_col, row_7, 0]; cv_in_1b = [right_col, row_5, 0]; audio_out_1 = [right_col, row_5, 0]; audio_out_1 = [right_col, row_6, 0]; audio_in_1 = [left_col, row_5, 0]; cv_in_2a = [left_col, row_3, 0]; pwm_duty = [width_mm - h_margin - working_width/8, row_2, 0]; fm_lvl = [h_margin+working_width/8, row_3, 0]; cv_in_2b = [right_col, row_2, 0]; triangle_out = [width_mm-h_margin-working_width/4, row_1, 0]; f_tune = [width_mm/2 - h_margin, top_row, 0]; left_rib_x = hole_dist_side + thickness; width_mm = hp_mm(h); difference() { union() { shape(fsh, cird+cdp*smt/100, cord, cfn*4, chg); module shape(hsh, ird, ord, fn4, hg) { x0= 0; x1 = hsh > 0 ? Ord : ird; y0=-0.1; y1=0; y2=abs(hsh); y3=hg-abs(hsh); y4=hg; y5=hg+0.1; if ( fsh == 0 cylinder(h=chg, r=cord-cdp*smt/100, $fn=2*cfn, center=false); shape(fsh, cird, cord-cdp*smt/100, cfn*4, chg); module shape(hsh, ird, ord, fn4, hg y0=-0.1; y1=0; y2=abs(hsh); y3=hg-abs(hsh); y4=hg; y5=hg+0.1; if ( hsh >= 0 module knurled_finish(ord, ird, lf, sh, fn, rn) { for(j=[0:rn-1]) assign(h0=sh*j, h1=sh*(j+1/2), h2=sh*(j+1)) { for(i=[0:fn-1]) assign(lf0=lf*i, lf1=lf*(i+1/2), lf2=lf*(i+1)) { polyhedron( points=[ [ 0,0,h0], [ ord*cos(lf0), ord*sin(lf0), h0], [ ird*cos(lf1), ird*sin(lf1), h2], [ ird*cos(lf1), ird*sin(lf1), h0], [ ird*cos(lf0), ird*sin(lf0), h1], [ 0,0,h2], [ ord*cos(lf0), ord*sin(lf0), h0.

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