diff --git a/LuaLibs/ProcessLongDoubleCut.lua b/LuaLibs/ProcessLongDoubleCut.lua
index 8259820..e6e9934 100644
--- a/LuaLibs/ProcessLongDoubleCut.lua
+++ b/LuaLibs/ProcessLongDoubleCut.lua
@@ -1070,12 +1070,27 @@ function ProcessLong2Cut.Make( Proc, nPhase, nRawId, nPartId, bForcedBladeMaster
                EgtSetMachiningParam( MCH_MP.LOTANG, dLioTang)
                EgtSetMachiningParam( MCH_MP.LOPERP, dLioPerp)
                -- imposto posizione braccio porta testa per non ingombrare agli estremi
+               local ptP1LineToMachine, _, ptP2LineToMachine = EgtSurfTmFacetOppositeSide( Proc.Id, vOrd[j] - 1, BL.GetVersRef( vFaceUse[vOrd[j]]), GDB_ID.ROOT)
+               local vtTg = ptP2LineToMachine - ptP1LineToMachine ;   vtTg:normalize()
+               local bIsMachiningInverted = EgtGetMachiningParam( MCH_MP.INVERT)
+               if bIsMachiningInverted then
+                  vtTg = -vtTg
+               end
+               if BD.C_SIMM then
+                  if abs( vtN[vOrd[j]]:getX()) < GEO.EPS_SMALL then
+                     nSCC = EgtIf( ( vtTg:getX() > GEO.EPS_SMALL), MCH_SCC.ADIR_XM, MCH_SCC.ADIR_XP)
+                  else
+                     nSCC = MCH_SCC.NONE
+                  end
+               else
+                  nSCC = EgtIf( ( i == 1 or i == nC - 1), MCH_SCC.ADIR_XP, MCH_SCC.ADIR_XM)
+               end
                EgtSetMachiningParam( MCH_MP.SCC, nSCC)
                -- determino e imposto l'utilizzo della faccia
                EgtSetMachiningParam( MCH_MP.FACEUSE, vFaceUse[vOrd[j]])
                -- imposto angolo 3° asse rot
                local vtOut = EgtIf( vtN[vOrd[j]]:getX() > 0, X_AX(), -X_AX())
-               EgtSetMachiningParam( MCH_MP.BLOCKEDAXIS, BL.GetBlockedAxis( sCutting, 'perpendicular', b3Raw, vtN, vtOut))
+               EgtSetMachiningParam( MCH_MP.BLOCKEDAXIS, BL.GetBlockedAxis( EgtIf( bCanUseUnderBlade, sCuttingDn, sCutting), 'perpendicular', b3Raw, vtN, vtOut))
                -- eseguo
                if not ML.ApplyMachining( true, false) then
                   local _, sErr = EgtGetLastMachMgrError()