height = 50;
mount_hole = 3.5;
clear = 0.175;
thickness = 1.2;
baseboard_thickness = 2;
teeth_width = 8;
teeth_count = 6;
teeth_size = 1;

$fn=20;

module leg () {
    difference () {
        cylinder(r=MLAB_grid/2 + 0.3,h=legs_height);
        cylinder(r=MLAB_grid/2 - 0.3,h=legs_height);
    }
}
                                                                                                                                                        // teeth
                for(count = [1:teeth_count]){
                        position = 150/(teeth_count+1)*count;
                        #translate ([position-teeth_width/2+1,-5+thickness/2,0]) cube([teeth_width-1, teeth_size, 5-baseboard_thickness]);
                        translate ([position-teeth_width/2+1,110+5-thickness/2,0]) cube([teeth_width-1, teeth_size, 5-baseboard_thickness]);
                }


difference () {
        minkowski() {
                cube([150+thickness/2,110+thickness/2,height+thickness/2]);          // base plastics brick
                cylinder(r=5,h=0.1);
        }
        translate ([thickness, thickness, 0])
                minkowski() {
                        cube([150-thickness, 110-thickness, height]);          // hollow
                        cylinder(r=5,h=0.1);
                }

        translate ([thickness/2, thickness/2, 0])
                difference () {
                        minkowski() {
                                cube([150-thickness/2+clear, 110-thickness/2+clear, 5]);          // hollow for BASE1115
                                cylinder(r=5,h=0.1);
                        }
                }
                for(count = [1:teeth_count]){                                                                                           // teeth space
                        position = 150/(teeth_count+1)*count;
                        translate ([position-teeth_width/2,-5-thickness,0]) cube([1,110+10+2*thickness,5]);
                        translate ([position+teeth_width/2,-5-thickness,0]) cube([1,110+10+2*thickness,5]);
                }
}