Simple example to solve 2d cut dogbone using a router CNC, write in OpenScad

dogbone.scad

//dogbone.scad - Simple example to solve 2d cut dogbone using a router CNC

square_side = 100;
half_square_side = square_side / 2;
radius = 5;
dog_bone_offset = sin(45) * radius;

square_vertex =  [[1, 1], [1, -1], [-1, -1], [-1, 1]];

difference () {
    square([square_side, square_side] * 2, center=true);
    square([square_side, square_side], center=true);
    for(i = square_vertex * (half_square_side - dog_bone_offset)) {
        translate(i) {
            circle(r = radius);
        }
    }
}

echo(version=version());
// Written by Fernando Gomes <feromes@gmail.com>
//
// To the extent possible under law, the author(s) have dedicated all
// copyright and related and neighboring rights to this software to the
// public domain worldwide. This software is distributed without any
// warranty.
//
// You should have received a copy of the CC0 Public Domain
// Dedication along with this software.
// If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.

dogbone_scheme.svg