diff --git a/examples.scad b/examples.scad
new file mode 100644
index 0000000..a30e01d
--- /dev/null
+++ b/examples.scad
@@ -0,0 +1,47 @@
+include <lasercut.scad>; 
+
+thickness = 3.1;
+x = 100;
+y = 200;
+z =  50;
+height = 75;
+
+
+module support()
+{
+    lasercutoutSquare(thickness=thickness, x=x, y=height,
+        simple_tab_holes=[
+            [MID, x*.25-thickness/2, height/2], 
+            [MID, x*.75-thickness/2, height/2]
+            ],
+        captive_nuts=[[UP, x/2, height] ]
+    );   
+}
+
+module stut()
+{
+    lasercutoutSquare(thickness=thickness, x=x, y=y-thickness*6,  
+        simple_tabs=[
+            [UP, x*.75, y-thickness*6], [UP, x*.25, y-thickness*6],
+            [DOWN, x*.75, 0], [DOWN, x*.25, 0] 
+            ]
+        );   
+}
+
+module box()
+{
+    circles_remove_a = [
+        [],
+        [[x/4, x/2, y/2]]
+    ];
+    captive_nut_holes_a = [
+        [[UP, x/2, y-2*thickness,], [DOWN, x/2, 0,], ]
+    ];
+    lasercutoutBox(thickness = thickness, x=x, y=y, z=z, sides=6, captive_nut_holes_a = captive_nut_holes_a, circles_remove_a=circles_remove_a );
+}
+
+
+translate([0,thickness*3,0]) rotate([90,0,0]) support();
+translate([0,y-thickness*2,0]) rotate([90,0,0]) support();
+translate([0,thickness*3,height/2]) stut();
+translate([0,0,height]) box();
diff --git a/generate.dxf b/generate.dxf
new file mode 100644
index 0000000..73f845b
--- /dev/null
+++ b/generate.dxf
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diff --git a/generate.scad b/generate.scad
new file mode 100644
index 0000000..dc26356
--- /dev/null
+++ b/generate.scad
@@ -0,0 +1,94 @@
+use <lasercut.scad>; 
+projection(cut = false) 
+	
+lasercutout(thickness=3.1, 
+             points= [[0, 0], [100, 0], [100, 75], [0, 75], [0, 0]], 
+            simple_tabs = [], 
+            simple_tab_holes = [[360, 23.45, 37.5], [360, 73.45, 37.5]], 
+            captive_nuts = [[0, 50, 75]], 
+            captive_nut_holes = [], 
+            finger_joints = [], 
+            circles_add = [], 
+            circles_remove = []) 
+
+lasercutout(thickness=3.1, 
+             points= [[0, 0], [100, 0], [100, 75], [0, 75], [0, 0]], 
+            simple_tabs = [], 
+            simple_tab_holes = [[360, 23.45, 37.5], [360, 73.45, 37.5]], 
+            captive_nuts = [[0, 50, 75]], 
+            captive_nut_holes = [], 
+            finger_joints = [], 
+            circles_add = [], 
+            circles_remove = []) 
+
+lasercutout(thickness=3.1, 
+             points= [[0, 0], [100, 0], [100, 181.4], [0, 181.4], [0, 0]], 
+            simple_tabs = [[0, 75, 181.4], [0, 25, 181.4], [180, 75, 0], [180, 25, 0]], 
+            simple_tab_holes = [], 
+            captive_nuts = [], 
+            captive_nut_holes = [], 
+            finger_joints = [], 
+            circles_add = [], 
+            circles_remove = []) 
+
+lasercutout(thickness=3.1, 
+             points= [[0, 0], [93.8, 0], [93.8, 193.8], [0, 193.8], [0, 0]], 
+            simple_tabs = [[180, -1.55, 0], [180, -1.55, 196.9], [270, 93.8, -1.55]], 
+            simple_tab_holes = undef, 
+            captive_nuts = undef, 
+            captive_nut_holes = [[0, 50, 193.8], [180, 50, 0]], 
+            finger_joints = [[0, 1, 4], [180, 1, 4], [90, 1, 4], [270, 0, 4]], 
+            circles_add = undef, 
+            circles_remove = []) 
+
+lasercutout(thickness=3.1, 
+             points= [[0, 0], [93.8, 0], [93.8, 193.8], [0, 193.8], [0, 0]], 
+            simple_tabs = [[180, -1.55, 0], [270, 93.8, -1.55]], 
+            simple_tab_holes = undef, 
+            captive_nuts = undef, 
+            captive_nut_holes = undef, 
+            finger_joints = [[0, 0, 4], [180, 1, 4], [90, 1, 4], [270, 0, 4]], 
+            circles_add = undef, 
+            circles_remove = [[25, 50, 100]]) 
+
+lasercutout(thickness=3.1, 
+             points= [[0, 0], [93.8, 0], [93.8, 43.8], [0, 43.8], [0, 0]], 
+            simple_tabs = [], 
+            simple_tab_holes = undef, 
+            captive_nuts = undef, 
+            captive_nut_holes = undef, 
+            finger_joints = [[0, 1, 4], [180, 0, 4], [90, 1, 4], [270, 0, 4]], 
+            circles_add = undef, 
+            circles_remove = undef) 
+
+lasercutout(thickness=3.1, 
+             points= [[0, 0], [93.8, 0], [93.8, 43.8], [0, 43.8], [0, 0]], 
+            simple_tabs = [[0, -1.55, 43.8], [180, 95.35, 0]], 
+            simple_tab_holes = undef, 
+            captive_nuts = undef, 
+            captive_nut_holes = undef, 
+            finger_joints = [[0, 1, 4], [180, 1, 4], [90, 1, 4], [270, 0, 4]], 
+            circles_add = undef, 
+            circles_remove = undef) 
+
+lasercutout(thickness=3.1, 
+             points= [[0, 0], [43.8, 0], [43.8, 193.8], [0, 193.8], [0, 0]], 
+            simple_tabs = [], 
+            simple_tab_holes = undef, 
+            captive_nuts = undef, 
+            captive_nut_holes = undef, 
+            finger_joints = [[0, 0, 4], [180, 1, 4], [90, 0, 4], [270, 1, 4]], 
+            circles_add = undef, 
+            circles_remove = undef) 
+
+lasercutout(thickness=3.1, 
+             points= [[0, 0], [43.8, 0], [43.8, 193.8], [0, 193.8], [0, 0]], 
+            simple_tabs = [[0, 45.35, 193.8]], 
+            simple_tab_holes = undef, 
+            captive_nuts = undef, 
+            captive_nut_holes = undef, 
+            finger_joints = [[0, 0, 4], [180, 1, 4], [90, 0, 4], [270, 1, 4]], 
+            circles_add = undef, 
+            circles_remove = undef) 
+
+;
diff --git a/lasercut.scad b/lasercut.scad
new file mode 100644
index 0000000..3a1f45d
--- /dev/null
+++ b/lasercut.scad
@@ -0,0 +1,351 @@
+UP = 0;
+DOWN = 180;
+LEFT = 90;
+RIGHT = 270;
+MID = 360;
+
+generate = $generate == undef ? 0: $generate; 
+
+if (generate == 1)
+{
+    // openscad examples.scad -D generate=1 -o /tmp/d.csg 2>&1 >/dev/null  | sed 's/ECHO: \"\[LC\] //' | sed 's/"$//' | sed '$a;' >./generate.scad ; openscad ./generate.scad -o generate.dxf
+    // (from http://forum.openscad.org/Sharing-Dump-echo-output-to-a-file-td12529.html)
+    echo("[LC] use <lasercut.scad>; \nprojection(cut = false) \n\t");
+}
+
+
+module lasercutoutSquare(thickness=3.1, x=0, y=0, 
+        simple_tabs=[], simple_tab_holes=[], 
+        captive_nuts=[], captive_nut_holes = [],
+        finger_joints = [],
+        circles_add = [],
+        circles_remove = [],
+)
+{
+    points = [[0,0], [x,0], [x,y], [0,y], [0,0]];
+lasercutout(thickness=thickness,  
+        points = points, 
+        simple_tabs = simple_tabs, 
+        simple_tab_holes = simple_tab_holes, 
+        captive_nuts = captive_nuts, 
+        captive_nut_holes = captive_nut_holes,
+        finger_joints = finger_joints,
+        circles_add = circles_add,
+        circles_remove = circles_remove);
+}
+
+module lasercutout(thickness=3.1,  points= [], 
+        simple_tabs=[], simple_tab_holes=[], 
+        captive_nuts=[], captive_nut_holes = [],
+        finger_joints = [],
+        circles_add = [1],
+        circles_remove = [],
+)
+{
+    path_total = len(points);
+    path = [ for (p = [0 : 1 : path_total]) p ];
+
+    function max_y(points) = max([for (a = [0:1:len(points)-1])  points[a][1]]);    
+    function min_y(points) = min([for (a = [0:1:len(points)-1])  points[a][1]]);    
+    function max_x(points) = max([for (a = [0:1:len(points)-1])  points[a][0]]);    
+    function min_x(points) = min([for (a = [0:1:len(points)-1])  points[a][0]]);    
+    
+    max_y = max_y(points);
+    min_y = min_y(points);
+    max_x = max_x(points);
+    min_x = min_x(points);
+    
+    difference() 
+    { 
+        union() 
+        {
+            linear_extrude(height = thickness , center = false)  polygon(points=points, path=path);
+            for (t = [0:1:len(simple_tabs)-1]) 
+            {
+                simpleTab(simple_tabs[t][0], simple_tabs[t][1], simple_tabs[t][2], thickness);
+            }
+            for (t = [0:1:len(captive_nuts)-1]) 
+            {
+                captiveNutTab(captive_nuts[t][0], captive_nuts[t][1], captive_nuts[t][2], thickness);
+            }    
+            for (t = [0:1:len(circles_add)-1]) 
+            {
+                circlesAdd(circles_add[t][0], circles_add[t][1], circles_add[t][2], thickness);
+            }    
+            for (t = [0:1:len(finger_joints)-1]) 
+            {
+                fingerJoint(finger_joints[t][0], finger_joints[t][1], finger_joints[t][2], thickness, max_y, min_y, max_x, min_x) ;
+            }    
+            
+        } // end union
+
+        for (t = [0:1:len(simple_tab_holes)-1]) 
+        {
+               simpleTabHole(simple_tab_holes[t][0], simple_tab_holes[t][1], simple_tab_holes[t][2], thickness);
+        }
+        for (t = [0:1:len(captive_nuts)-1]) 
+        {
+            captiveNutBoltHole(captive_nuts[t][0], captive_nuts[t][1], captive_nuts[t][2], thickness);
+        }
+        for (t = [0:1:len(captive_nut_holes)-1]) 
+        {
+            captiveNutHole(captive_nut_holes[t][0], captive_nut_holes[t][1], captive_nut_holes[t][2], thickness);
+        }    
+        for (t = [0:1:len(circles_remove)-1]) 
+        {
+            circlesRemove(circles_remove[t][0], circles_remove[t][1], circles_remove[t][2], thickness);
+        }    
+        
+    }
+    
+    if ($children) translate([0, max_y(points) + thickness*3, 0])
+            children();
+
+    if (generate == 1)
+    {
+        output = str(
+        "[LC] lasercutout(thickness=", thickness, ", \n 
+            points= ", points, ", \n
+            simple_tabs = ",simple_tabs,", \n
+            simple_tab_holes = ",simple_tab_holes,", \n
+            captive_nuts = ",captive_nuts,", \n
+            captive_nut_holes = ",captive_nut_holes,", \n
+            finger_joints = ",finger_joints,", \n
+            circles_add = ",circles_add,", \n
+            circles_remove = ",circles_remove,") \n"
+        );
+        echo(output);
+    }
+}
+
+
+
+module simpleTab(angle, x, y, thickness)
+{
+    translate([x,y,0]) rotate([0,0,angle]) translate([-thickness/2,0,0]) cube([thickness, thickness, thickness]); 
+}
+
+module simpleTabHole(angle, x, y, thickness)
+{
+     // Special case does not go past edge - so make only 1 thickness y
+     if (angle == 360)
+     {
+         translate([x,y,0]) rotate([0,0,0]) translate([0,0,-thickness]) cube([thickness, thickness, thickness*3]); 
+     }
+     else
+     {
+         translate([x,y,0]) rotate([0,0,angle-180]) translate([-thickness/2,-thickness,-thickness]) cube([thickness, thickness*2, thickness*3]); 
+     }
+}
+
+module captiveNutBoltHole(angle, x, y, thickness)
+{
+    translate([x,y,0]) rotate([0,0,angle-180]) union() 
+    {
+        translate([-thickness/2,-thickness,-thickness]) cube([thickness, thickness*4, thickness*3]); 
+        translate([-thickness/2-thickness,thickness,-thickness]) cube([thickness*3, thickness, thickness*3]); 
+    }
+}
+
+module fingerJoint(angle, start_up, fingers, thickness, max_y, min_y, max_x, min_x)
+{
+    if ( angle == UP )
+    {
+        range_min = min_x; 
+        range_max = max_x; 
+        t_x = min_x;
+        t_y = max_y;
+        fingers(angle, start_up, fingers, thickness, range_min, range_max, t_x, t_y);
+    }
+    if ( angle == DOWN )
+    {
+        range_min = min_x; 
+        range_max = max_x; 
+        t_x = max_x;
+        t_y = min_y;
+        fingers(angle, start_up, fingers, thickness, range_min, range_max, t_x, t_y);
+    }
+    if ( angle == LEFT )
+    {
+        range_min = min_y; 
+        range_max = max_y; 
+        t_x = min_x;
+        t_y = min_y;
+        fingers(angle, start_up, fingers, thickness, range_min, range_max, t_x, t_y);
+    }
+    if ( angle == RIGHT )
+    {
+        range_min = min_y; 
+        range_max = max_y; 
+        t_x = max_x;
+        t_y = max_y;
+        fingers(angle, start_up, fingers, thickness, range_min, range_max, t_x, t_y);
+    }
+
+}
+
+module fingers(angle, start_up, fingers, thickness, range_min, range_max, t_x, t_y)
+{
+    // The tweaks to y translate([0, -thickness,0]) ... thickness*2 rather than *1
+    // Are to avoid edge cases and make the dxf export better.
+    // All fun
+    translate([t_x, t_y,0]) rotate([0,0,angle]) translate([0, -thickness,0])
+    {
+        for ( i = [range_min : (range_max-range_min)/fingers : range_max - (range_max-range_min)/fingers] )
+        {
+            if(start_up == 1) 
+                {
+                    translate([i,0,0]) cube([ (range_max-range_min)/(fingers*2), thickness*2, thickness]);
+                }
+            else 
+            {
+                    translate([i+(range_max-range_min)/(fingers*2),0,0]) cube([ (range_max-range_min)/(fingers*2), thickness*2, thickness]);
+                
+            }
+        }
+    }
+
+}
+
+module captiveNutTab(angle, x, y, thickness)
+{
+    translate([x,y,0]) rotate([0,0,angle]) union()
+    {
+        translate([-thickness/2+thickness*2,0,0]) cube([thickness*3, thickness, thickness]); 
+        translate([-thickness/2-thickness*4,0,0]) cube([thickness*3, thickness, thickness]); 
+    }
+}
+
+module captiveNutHole(angle, x, y, thickness)
+{
+    translate([x,y,0]) rotate([0,0,angle]) union()
+    {
+        translate([-thickness/2,-thickness*2,-thickness]) cube([thickness, thickness, thickness*3]); 
+        translate([-thickness/2+thickness*2,-thickness*2,-thickness]) cube([thickness*3, thickness, thickness*3]); 
+        translate([-thickness/2-thickness*4,-thickness*2,-thickness]) cube([thickness*3, thickness, thickness*3]); 
+    }
+}
+
+module circlesAdd(radius, x, y, thickness)
+{
+    translate([x,y,0]) cylinder(h=thickness, r=radius);
+}
+
+module circlesRemove(radius, x, y, thickness)
+{
+    translate([x,y,-thickness]) cylinder(h=thickness*3, r=radius);
+}
+
+
+module lasercutoutBox(thickness = 3.1, x=0, y=0, z=0, sides=6,
+        simple_tab_holes_a=[], 
+        captive_nuts_a=[], captive_nut_holes_a=[],
+        circles_add_a=[],
+        circles_remove_a=[],
+)
+{
+    if (sides==4)
+    {
+        fj = [
+            [ [UP, 1, 4], [DOWN, 1, 4],    ],
+            [ [UP, 0, 4], [DOWN, 1, 4],    ],
+            [ [UP, 1, 4], [DOWN, 0, 4],    ],
+            [ [UP, 1, 4], [DOWN, 1, 4],    ],
+        ];
+        translate([0,thickness,0]) lasercutoutBoxAdjustedFJ(thickness = thickness, x=x, y=y-thickness*2 , z=z-thickness*2, sides=sides, fj=fj,
+            simple_tab_holes_a=simple_tab_holes_a, 
+            captive_nuts_a=captive_nuts_a, captive_nut_holes_a=captive_nut_holes_a,
+            circles_add_a=circles_add_a,
+            circles_remove_a=circles_remove_a);
+    }
+    if (sides==5)
+    {
+        st = [
+        [[DOWN, -thickness/2, 0], [DOWN, -thickness/2, y-thickness] ],
+        [[DOWN, -thickness/2, 0], ],
+        [[UP, -thickness/2, z-thickness*2], ],
+        ];
+        fj = [
+            [ [UP, 1, 4], [DOWN, 1, 4], [LEFT, 1, 4],   ],
+            [ [UP, 0, 4], [DOWN, 1, 4], [LEFT, 1, 4],   ],
+            [ [UP, 1, 4], [DOWN, 0, 4], [LEFT, 1, 4],   ],
+            [ [UP, 1, 4], [DOWN, 1, 4], [LEFT, 1, 4],   ],
+            [ [UP, 0, 4], [DOWN, 1, 4], [LEFT, 0, 4], [RIGHT, 1, 4]  ],
+        ];
+        
+        translate([thickness,thickness,0]) lasercutoutBoxAdjustedFJ(thickness = thickness, x=x-thickness, y=y-thickness*2 , z=z-thickness*2, sides=sides, fj=fj, st=st,
+            simple_tab_holes_a=simple_tab_holes_a, 
+            captive_nuts_a=captive_nuts_a, captive_nut_holes_a=captive_nut_holes_a,
+            circles_add_a=circles_add_a,
+            circles_remove_a=circles_remove_a);
+        }
+    if (sides==6)
+    {
+        st = [
+        [[DOWN, -thickness/2, 0], [DOWN, -thickness/2, y-thickness] , [RIGHT, x-thickness*2, -thickness/2]],
+        [[DOWN, -thickness/2, 0], [RIGHT, x-thickness*2, -thickness/2]],
+        [[UP, -thickness/2, z-thickness*2], [DOWN, x-thickness*1.5, 0], ],
+        [[UP, z-thickness*1.5, y-thickness*2], ],
+        ];
+        fj = [
+            [ [UP, 1, 4], [DOWN, 1, 4], [LEFT, 1, 4], [RIGHT, 0, 4]  ],
+            [ [UP, 0, 4], [DOWN, 1, 4], [LEFT, 1, 4], [RIGHT, 0, 4]  ],
+            [ [UP, 1, 4], [DOWN, 0, 4], [LEFT, 1, 4], [RIGHT, 0, 4]  ],
+            [ [UP, 1, 4], [DOWN, 1, 4], [LEFT, 1, 4], [RIGHT, 0, 4]  ],
+            [ [UP, 0, 4], [DOWN, 1, 4], [LEFT, 0, 4], [RIGHT, 1, 4]  ],
+            [ [UP, 0, 4], [DOWN, 1, 4], [LEFT, 0, 4], [RIGHT, 1, 4]  ],
+        ];
+        translate([thickness,thickness,0]) lasercutoutBoxAdjustedFJ(thickness = thickness, x=x-thickness*2, y=y-thickness*2 , z=z-thickness*2, sides=sides, fj=fj, st=st,
+            simple_tab_holes_a=simple_tab_holes_a, 
+            captive_nuts_a=captive_nuts_a, captive_nut_holes_a=captive_nut_holes_a,
+            circles_add_a=circles_add_a,
+            circles_remove_a=circles_remove_a);
+    }    
+}
+
+
+module lasercutoutBoxAdjustedFJ(thickness = 3.1, x=0, y=0, z=0, sides=6, fj=[], st=[],
+        simple_tab_holes_a=[], 
+        captive_nuts_a=[], captive_nut_holes_a = [],
+        circles_add_a = [],
+        circles_remove_a = [])
+{
+    translate([0,0,0]) lasercutoutSquare(x=x, y=y, simple_tabs = st[0], finger_joints = fj[0],
+                                simple_tab_holes=simple_tab_holes_a[0], captive_nuts=captive_nuts_a[0],
+                                captive_nut_holes = captive_nut_holes_a[0],
+                                circles_add = circles_add_a[0], circles_remove = circles_remove_a[0]);
+
+    translate([0,0,z+thickness]) lasercutoutSquare(x=x, y=y, simple_tabs = st[1], finger_joints = fj[1],
+                                simple_tab_holes=simple_tab_holes_a[1], captive_nuts=captive_nuts_a[1],
+                                captive_nut_holes = captive_nut_holes_a[1],
+                                circles_add = circles_add_a[1], circles_remove = circles_remove_a[1]);
+
+    translate([0,0,thickness]) rotate([90,0,0]) lasercutoutSquare(x=x, y=z, finger_joints = fj[2],
+                                simple_tab_holes=simple_tab_holes_a[2], captive_nuts=captive_nuts_a[2],
+                                captive_nut_holes = captive_nut_holes_a[2],
+                                circles_add = circles_add_a[2], circles_remove = circles_remove_a[2]);
+
+    translate([0,y+thickness,thickness]) rotate([90,0,0]) lasercutoutSquare(x=x, y=z, simple_tabs = st[2], 
+                                finger_joints = fj[3],
+                                simple_tab_holes=simple_tab_holes_a[3], captive_nuts=captive_nuts_a[3],
+                                captive_nut_holes = captive_nut_holes_a[3],
+                                circles_add = circles_add_a[3], circles_remove = circles_remove_a[3]);
+    
+    if (sides>4)
+    {
+        translate([0,0,thickness]) rotate([0,-90,0]) lasercutoutSquare(x=z, y=y, finger_joints = fj[4],
+                                simple_tab_holes=simple_tab_holes_a[4], captive_nuts=captive_nuts_a[4],
+                                captive_nut_holes = captive_nut_holes_a[4],
+                                circles_add = circles_add_a[4], circles_remove = circles_remove_a[4]);
+    }
+    
+    if (sides>5)
+    {
+        translate([x+thickness,0,thickness]) rotate([0,-90,0]) lasercutoutSquare(x=z, y=y, 
+                                simple_tabs = st[3], finger_joints = fj[5],
+                                simple_tab_holes=simple_tab_holes_a[5], captive_nuts=captive_nuts_a[5],
+                                captive_nut_holes = captive_nut_holes_a[5],
+                                circles_add = circles_add_a[5], circles_remove = circles_remove_a[5]);
+    }
+}
+