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NL4MD-H-2, https://www.neutrik.com/en/product/nl4mdxx-h-2 speakON Chassis Connectors, 4 pole chassis connector, gray D-size flange, mirrored self tapping screw holes (A-screw), vertical PCB mount, retention spring instead of the rail + a safety margin // margins from edges h_margin = hole_dist_side + thickness; v_margin = hole_dist_top*2; left_rib_x = thickness * 1; right_rib_x = width_mm - hole_dist_side - thickness; // additives - labels, etc // one more vertical to mount a circuit board to, dead center wall(h=6, w=height-hole_dist_top*3-4); // color([1,0,0] // surface("FIREBALL VCO.png", center=true, invert=false); } 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 [ ord*cos(lf2), ord*sin(lf2), h0], [ ord*cos(lf2), ord*sin(lf2), h2] ], triangles=[ [0,1,2],[2,3,0], [1,0,4],[4,0,7],[7,8,4], [8,7,9],[10,9,7], [10,7,6],[6,7,0],[3,6,0], [2,1,4],[3,2,6],[10,6,9],[8,9,4], [4,5,2],[2,5,6],[6,5,9],[9,5,4] ], convexity=5); } } //Sites that provide images.

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