diff --git a/LuaLibs/ProcessFreeContour.lua b/LuaLibs/ProcessFreeContour.lua
index 16e5e91..84d4c94 100644
--- a/LuaLibs/ProcessFreeContour.lua
+++ b/LuaLibs/ProcessFreeContour.lua
@@ -383,13 +383,21 @@ local function MakeByMill( Proc, nPhase, nRawId, nPartId, dOvmHead)
             EgtSetMachiningParam( MCH_MP.ENDADDLEN, dEndAddSpec + 1)
          end
          -- posizione braccio porta testa
-         if Proc.Head then
-            EgtSetMachiningParam( MCH_MP.SCC, MCH_SCC.ADIR_XP)
-         elseif Proc.Tail then
-            EgtSetMachiningParam( MCH_MP.SCC, MCH_SCC.ADIR_XM)
-         elseif AreSameOrOppositeVectorApprox( vtExtr, Z_AX()) then
-            EgtSetMachiningParam( MCH_MP.SCC, MCH_SCC.ADIR_YP)
+         local nSCC = MCH_SCC.NONE
+         if not BD.C_SIMM then
+            if Proc.Head then
+               nSCC = MCH_SCC.ADIR_XP
+            elseif Proc.Tail then
+               nSCC = MCH_SCC.ADIR_XM
+            elseif AreSameOrOppositeVectorApprox( vtExtr, Z_AX()) then
+               nSCC = MCH_SCC.ADIR_YP
+            elseif vtExtr:getY() > -0.01 then
+               nSCC = MCH_SCC.ADIR_YP
+            else
+               nSCC = MCH_SCC.ADIR_YM
+            end
          end
+         EgtSetMachiningParam( MCH_MP.SCC, nSCC)
          -- eseguo
          if not EgtApplyMachining( true, false) then
             local _, sErr = EgtGetLastMachMgrError()
@@ -436,13 +444,21 @@ local function MakeByMill( Proc, nPhase, nRawId, nPartId, dOvmHead)
                EgtSetMachiningParam( MCH_MP.STARTADDLEN, dStartAddSpec + 1)
             end
             -- posizione braccio porta testa
-            if Proc.Head then
-               EgtSetMachiningParam( MCH_MP.SCC, MCH_SCC.ADIR_XP)
-            elseif Proc.Tail then
-               EgtSetMachiningParam( MCH_MP.SCC, MCH_SCC.ADIR_XM)
-            elseif AreSameOrOppositeVectorApprox( vtExtr, Z_AX()) then
-               EgtSetMachiningParam( MCH_MP.SCC, MCH_SCC.ADIR_YP)
+            local nSCC = MCH_SCC.NONE
+            if not BD.C_SIMM then
+               if Proc.Head then
+                  nSCC = MCH_SCC.ADIR_XP
+               elseif Proc.Tail then
+                  nSCC = MCH_SCC.ADIR_XM
+               elseif AreSameOrOppositeVectorApprox( vtExtr, Z_AX()) then
+                  nSCC = MCH_SCC.ADIR_YP
+               elseif vtExtr:getY() < 0.01 then
+                  nSCC = MCH_SCC.ADIR_YP
+               else
+                  nSCC = MCH_SCC.ADIR_YM
+               end
             end
+            EgtSetMachiningParam( MCH_MP.SCC, nSCC)
             -- eseguo
             if not EgtApplyMachining( true, false) then
                local _, sErr = EgtGetLastMachMgrError()
@@ -520,13 +536,21 @@ local function MakeByMill( Proc, nPhase, nRawId, nPartId, dOvmHead)
             EgtSetMachiningParam( MCH_MP.WORKSIDE, MCH_MILL_WS.RIGHT)
          end
          -- posizione braccio porta testa
-         if Proc.Head then
-            EgtSetMachiningParam( MCH_MP.SCC, MCH_SCC.ADIR_XP)
-         elseif Proc.Tail then
-            EgtSetMachiningParam( MCH_MP.SCC, MCH_SCC.ADIR_XM)
-         elseif AreSameOrOppositeVectorApprox( vtExtr, Z_AX()) then
-            EgtSetMachiningParam( MCH_MP.SCC, MCH_SCC.ADIR_YP)
+         local nSCC = MCH_SCC.NONE
+         if not BD.C_SIMM then
+            if Proc.Head then
+               nSCC = MCH_SCC.ADIR_XP
+            elseif Proc.Tail then
+               nSCC = MCH_SCC.ADIR_XM
+            elseif AreSameOrOppositeVectorApprox( vtExtr, Z_AX()) then
+               nSCC = MCH_SCC.ADIR_YP
+            elseif ( j == 1 and vtExtr:getY() > -0.01) or ( j == 2 and vtExtr:getY() < 0.01) then
+               nSCC = MCH_SCC.ADIR_YP
+            else
+               nSCC = MCH_SCC.ADIR_YM
+            end
          end
+         EgtSetMachiningParam( MCH_MP.SCC, nSCC)
          -- acquisisco parametro sovramateriale
          local bFinish
          local dOriOffset = 0