-translate([0,0,-tiefe]) cube([strichlaenge, strichdicke, 3*tiefe],center=true);
-translate([0,0,-tiefe]) cube([strichdicke, strichlaenge, 3*tiefe],center=true);
-translate([0,0,-tiefe]) rotate([0,0,-45]) cube([strichlaenge, strichdicke, 3*tiefe],center=true);
-translate([0,0,-tiefe]) rotate([0,0,45]) cube([strichlaenge, strichdicke, 3*tiefe],center=true);
+translate([0,0,-kante/2+kerbe]) cube([strichlaenge, strichdicke, tiefe],center=true);
+translate([0,0,-kante/2+kerbe]) cube([strichdicke, strichlaenge, tiefe],center=true);
+translate([0,0,-kante/2+kerbe]) rotate([0,0,-45]) cube([strichlaenge, strichdicke, tiefe],center=true);
+translate([0,0,-kante/2+kerbe]) rotate([0,0,45]) cube([strichlaenge, strichdicke, tiefe],center=true);