added slot

openscad/foreign/sc808/fanholder.scad

@@ -74,7 +74,13 @@ module hole_control(){
         }
 }
 // #####################################
-translate([0,0,base_h/2])fanblock();
+translate([0,0,base_h/2]){
+    difference(){
+        fanblock();
+        //cable-slot
+        translate([0,0,base_h/2-2*mt+0.1])#cube([2*mt,base_d+0.1,4*mt],center=true);
+    }
+}
 translate([-base_w/2,0,mt/2])tab();
 rotate([0,0,180])translate([-base_w/2,0,mt/2])tab();