diff --git a/LuaLibs/MachiningLib.lua b/LuaLibs/MachiningLib.lua
index d30fbfe..59d0bcb 100644
--- a/LuaLibs/MachiningLib.lua
+++ b/LuaLibs/MachiningLib.lua
@@ -120,6 +120,8 @@ function MachiningLib.GetSplitMachinings( Machinings, SplittingPoints, Part )
       local dOriginalStartAddLength = Machinings[i].LeadIn.dStartAddLength
       local dOriginalEndAddLength = Machinings[i].LeadOut.dEndAddLength
       local sOriginalStage = Machinings[i].sStage
+      local LeadInForSplit = Machinings[i].LeadInForSplit
+      local LeadOutForSplit = Machinings[i].LeadOutForSplit
       if FeatureLib.IsMachiningLong( Machinings[i].dLengthOnX, Part) then
          local nCurrentMachiningIndex = i
          -- lo spezzone attivo è quello precedente al punto di spezzatura corrente
@@ -142,13 +144,25 @@ function MachiningLib.GetSplitMachinings( Machinings, SplittingPoints, Part )
                end
                if j == 1 then
                   dEndAddLength = - ( SplittingPoints[j]:getX() - dEdgeMinX) + BeamData.MILL_OVERLAP
+                  if LeadOutForSplit then
+                     Machinings[nCurrentMachiningIndex].LeadOut = LeadOutForSplit
+                  end
                   Machinings[nCurrentMachiningIndex].ptCenter = Point3d( SplittingPoints[j]:getX() + ( dEdgeMaxX - SplittingPoints[j]:getX()) / 2, 0, 0)
                elseif j == nParts then
                   dStartAddLength = - ( dEdgeMaxX - SplittingPoints[j - 1]:getX()) + BeamData.MILL_OVERLAP
+                  if LeadInForSplit then
+                     Machinings[nCurrentMachiningIndex].LeadIn = LeadInForSplit
+                  end
                   Machinings[nCurrentMachiningIndex].ptCenter = Point3d( dEdgeMinX + ( SplittingPoints[j - 1]:getX() - dEdgeMinX) / 2, 0, 0)
                else
                   dStartAddLength = - ( dEdgeMaxX - SplittingPoints[j - 1]:getX()) + BeamData.MILL_OVERLAP
                   dEndAddLength = - ( SplittingPoints[j]:getX() - dEdgeMinX) + BeamData.MILL_OVERLAP
+                  if LeadInForSplit then
+                     Machinings[nCurrentMachiningIndex].LeadIn = LeadInForSplit
+                  end
+                  if LeadOutForSplit then
+                     Machinings[nCurrentMachiningIndex].LeadOut = LeadOutForSplit
+                  end
                   Machinings[nCurrentMachiningIndex].ptCenter = Point3d( SplittingPoints[j]:getX() + ( SplittingPoints[j - 1]:getX() - SplittingPoints[j]:getX()) / 2, 0, 0)
                end
                if MachiningLib.StartsLeftSide( Machinings[nCurrentMachiningIndex]) then