+module LimitForHandling(){ ////toplevel
+ for (r=[0,180])
+ rotate([0,0,r]) {
+
+ }
+ hull() rotate_extrude(){
+ translate([ handling_dia/2 - main_cnr, top_z - main_cnr ]) {
+ circle(r = main_cnr);
+ mirror([0,1]) square([ main_cnr, 50 ]);
+ }
+ }
+ //cylinder(r= handling_dia/2, h=20);
+}
+