minkowski_corr.scad

module minkowskiCorr(x,y,r,h)
{
    difference()
    {
        translate([r,r,0]) // corrects for origin shift
        {
            minkowski()
            {
                cube([x-2*r,y-2*r,h]); //cube reduced by twice the radius which is added by minkowski method
                cylinder(h=h,r=r);
            }
        }
        translate([0,0,h]) // cuts off the top, since minkowski method doubles the height
        {
                cube([x,y,h]);
        }
    }
}

// example
minkowskiCorr(40,30,6,10);