module tableEdgeClip(length = 4, depth = 20, thickness = 4, tableDepth = 21.58, clampAngle = 3) {
  translate([0, length/-2, tableDepth/-2 - thickness])
    cube([thickness, length, tableDepth + 2*thickness]);

  translate([0.01, length/-2, tableDepth/-2 - thickness])
    mirror([1, 0, 0])
    rotate([0, -clampAngle, 0])
    cube([depth + 0.01, length, thickness]);

  mirror([0, 0, 1])
    translate([0.01, length/-2, tableDepth/-2 - thickness])
    mirror([1, 0, 0])
    rotate([0, -clampAngle, 0])
    cube([depth + 0.01, length, thickness]);
}