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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), h2], [ ord*cos(lf2), ord*sin(lf2), h2] echo(" Knurled Surface Library v2 "); echo(" knurl_wd - [ 2 ] ,, Knurl's Surface Smoothing : File donwn the top edge or circumference using spheres (or rather regular polyhedra) arranged in a narrow space between them left_panel_spacing = (left_panel_width) / 2.5; slider_spacing = 12.5; // space between two resistors in the output jacks triangle_out = [width_mm-h_margin-working_width/4, row_1, 0]; triangle_out = [third_col, fifth_row, 0]; //left_rib_x = thickness * 2; right_rib_x = width_mm - h_margin; input_column = h_margin; bottom_row = v_margin + 12; //knob_radius top_row = height - v_margin; working_increment = working_height / (8+tolerance/3); // generally-useful spacing.

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