diff --git a/LuaLibs/MachiningLib.lua b/LuaLibs/MachiningLib.lua
index 55f2bb6..f5eb317 100644
--- a/LuaLibs/MachiningLib.lua
+++ b/LuaLibs/MachiningLib.lua
@@ -255,6 +255,12 @@ function GetMachinings( MachiningType, sType)
          end
       end
    end
+   -- rimuovo le lavorazioni senza utensile
+   for i, machining in ipairs( Machinings) do
+      if not machining.Tool.Name then
+         table.remove( Machinings, i)
+      end
+   end
    return Machinings
 end