diff --git a/LuaLibs/ProcessLapJoint.lua b/LuaLibs/ProcessLapJoint.lua
index b8cdcf8..fd7c76d 100644
--- a/LuaLibs/ProcessLapJoint.lua
+++ b/LuaLibs/ProcessLapJoint.lua
@@ -4733,19 +4733,19 @@ function SawPlusChain.GetToolFromMachining( sMachiningName)
    return Tool
 end
 
-function SawPlusChain.GetSCC( vMachiningDirection)
+function SawPlusChain.GetSCC( vtMachiningDirection)
    local nSCC = MCH_SCC.NONE
-   if AreSameVectorApprox( vMachiningDirection, Z_AX()) then
+   if AreSameVectorApprox( vtMachiningDirection, Z_AX()) then
       nSCC = MCH_SCC.ADIR_ZP
-   elseif AreOppositeVectorApprox( vMachiningDirection, Z_AX()) then
+   elseif AreOppositeVectorApprox( vtMachiningDirection, Z_AX()) then
       nSCC = MCH_SCC.ADIR_ZM
-   elseif AreSameVectorApprox( vMachiningDirection, Y_AX()) then
+   elseif AreSameVectorApprox( vtMachiningDirection, Y_AX()) then
       nSCC = MCH_SCC.ADIR_YP
-   elseif AreOppositeVectorApprox( vMachiningDirection, Y_AX()) then
+   elseif AreOppositeVectorApprox( vtMachiningDirection, Y_AX()) then
       nSCC = MCH_SCC.ADIR_YM
-   elseif AreSameVectorApprox( vMachiningDirection, X_AX()) then
+   elseif AreSameVectorApprox( vtMachiningDirection, X_AX()) then
       nSCC = MCH_SCC.ADIR_XP
-   elseif AreOppositeVectorApprox( vMachiningDirection, X_AX()) then
+   elseif AreOppositeVectorApprox( vtMachiningDirection, X_AX()) then
       nSCC = MCH_SCC.ADIR_XM
    end
 
@@ -4765,7 +4765,7 @@ function SawPlusChain.GetVerticalSteps( Proc, Machining)
    return VerticalSteps
 end
 
-function SawPlusChain.GetHorizontalSteps( Proc, Machining)
+function SawPlusChain.GetHorizontalSteps( Machining)
    HorizontalSteps = {}
    HorizontalSteps.StepLength = 0
    HorizontalSteps.Count = 1
@@ -4779,6 +4779,60 @@ function SawPlusChain.GetHorizontalSteps( Proc, Machining)
    return HorizontalSteps
 end
 
+function SawPlusChain.GetLeadInOut( Proc, Machining)
+   -- si determina se l'inizio o la fine della lavorazione sono chiusi e l'eventuale riduzione da applicare
+   local bIsStartClosed = false
+   local bIsEndClosed = false
+   local dAddLengthToReduce = sqrt( Machining.Depth * Machining.Tool.Diameter - Machining.Depth * Machining.Depth)
+   if #( Proc.Pocket.SideFaces) == 2 then
+      bIsStartClosed = true
+      bIsEndClosed = true
+   elseif #( Proc.Pocket.SideFaces) == 1 then
+      local CCWDirection = ( Machining.FaceToMachine.VtN ^ Proc.Pocket.BottomFace.VtN)
+      if Machining.ToolInvert then
+         CCWDirection = - CCWDirection
+      end
+      if CCWDirection * Proc.Pocket.SideFaces[1].VtN > 10 * GEO.EPS_SMALL then
+         if Machining.Tool.IsCCW then
+            bIsStartClosed = true
+         else
+            bIsEndClosed = true
+         end
+      else
+         if Machining.Tool.IsCCW then
+            bIsEndClosed = true
+         else
+            bIsStartClosed = true
+         end
+      end
+   end
+
+   LeadIn = {}
+   LeadOut = {}
+   LeadIn.Type = MCH_MILL_LI.LINEAR
+   LeadOut.Type = MCH_MILL_LI.LINEAR
+   LeadIn.TangentDistance = 0
+   LeadOut.TangentDistance = 0
+   LeadIn.Elevation = 0
+   LeadOut.Elevation = 0
+   LeadIn.CompLength = 0
+   LeadOut.CompLength = 0
+   LeadIn.StartAddLength = 0
+   LeadOut.EndAddLength = 0
+   LeadIn.PerpDistance = 0
+   LeadOut.PerpDistance = 0
+   if bIsStartClosed then
+      LeadIn.StartAddLength = -dAddLengthToReduce
+      LeadIn.PerpDistance = 1
+   end
+   if bIsEndClosed then
+      LeadOut.EndAddLength = -dAddLengthToReduce
+      LeadOut.PerpDistance = 1
+   end
+
+   return LeadIn, LeadOut
+end
+
 function SawPlusChain.ApplyMachining( Machining, sOperationNamePrefix, b3Raw)
    local sOperationName = sOperationNamePrefix .. ( EgtGetName( Machining.ProcId) or tostring( Machining.ProcId)) .. '_' .. tostring( Machining.FaceToMachine.Id + 1)
    local nOperationId = EgtAddMachining( sOperationName, Machining.Name)
@@ -4810,11 +4864,8 @@ function SawPlusChain.ApplyMachining( Machining, sOperationNamePrefix, b3Raw)
    if Machining.VerticalSteps.MaxElev then
       sNotes = EgtSetValInNotes( sNotes, 'MaxElev', Machining.VerticalSteps.MaxElev)
    end
+   EgtSetMachiningParam( MCH_MP.BLOCKEDAXIS, BL.GetBlockedAxis( Machining.Name, Machining.BlockedAxis.Orientation, b3Raw, Machining.FaceToMachine.VtN, Machining.BlockedAxis.VtOut))
    EgtSetMachiningParam( MCH_MP.USERNOTES, sNotes)
-   -- imposto angolo 3° asse rot
-   local sBlockedAxis = 'perpendicular'
-   local vtOut = EgtIf( Machining.FaceToMachine.VtN:getX() > 0, X_AX(), -X_AX())
-   EgtSetMachiningParam( MCH_MP.BLOCKEDAXIS, BL.GetBlockedAxis( Machining.Name, sBlockedAxis, b3Raw, Machining.FaceToMachine.VtN, vtOut))
 
    local bIsApplyOk = ML.ApplyMachining( true, false)
    if not bIsApplyOk then
@@ -4854,6 +4905,10 @@ function SawPlusChain.Make( Proc, b3Raw)
    local Cutting = {}
    Cutting.ProcId = Proc.Id
    Cutting.Name = ML.FindCutting( 'HeadSide', true, false)
+   if not Cutting.Name then
+      local sErr = 'Feature '.. Proc.FeatureId .. ': Strategy ' .. Proc.Pocket.Strategy .. ' not applicable - saw blade not found'
+      return false, sErr
+   end
    Cutting.Tool = SawPlusChain.GetToolFromMachining( Cutting.Name)
    Cutting.FaceToMachine = Proc.Pocket.FaceToMachine
 
@@ -4861,6 +4916,10 @@ function SawPlusChain.Make( Proc, b3Raw)
    local Chainsawing = {}
    Chainsawing.ProcId = Proc.Id
    Chainsawing.Name = ML.FindSawing( 'Sawing')
+   if not Chainsawing.Name then
+      local sErr = 'Feature '.. Proc.FeatureId .. ': Strategy ' .. Proc.Pocket.Strategy .. ' not applicable - chainsaw not found'
+      return false, sErr
+   end
    Chainsawing.Tool = SawPlusChain.GetToolFromMachining( Chainsawing.Name)
    Chainsawing.FaceToMachine = Proc.Pocket.FaceToMachine
 
@@ -4916,6 +4975,10 @@ function SawPlusChain.Make( Proc, b3Raw)
    Cutting.Faceuse = BL.GetNearestOrthoOpposite( Proc.Pocket.Direction)
    -- SCC
    Cutting.SCC = SawPlusChain.GetSCC( Proc.Pocket.Direction)
+   -- asse bloccato
+   Cutting.BlockedAxis = {}
+   Cutting.BlockedAxis.Orientation = 'perpendicular'
+   Cutting.BlockedAxis.VtOut = EgtIf( Cutting.FaceToMachine.VtN:getX() > 0, X_AX(), -X_AX())
    -- step verticale e offset longitudinale
    Cutting.VerticalSteps = SawPlusChain.GetVerticalSteps( Proc, Cutting)
    if Cutting.ToolInvert and Cutting.VerticalSteps.Count > 1 then
@@ -4924,56 +4987,9 @@ function SawPlusChain.Make( Proc, b3Raw)
       Cutting.LongitudinalOffset = 0
    end
    -- step orizzontale
-   Cutting.HorizontalSteps = SawPlusChain.GetHorizontalSteps( Proc, Cutting)
+   Cutting.HorizontalSteps = SawPlusChain.GetHorizontalSteps( Cutting)
    -- approccio e retrazione
-   Cutting.LeadIn = {}
-   Cutting.LeadOut = {}
-   Cutting.LeadIn.Type = MCH_MILL_LI.LINEAR
-   Cutting.LeadOut.Type = MCH_MILL_LI.LINEAR
-   Cutting.LeadIn.TangentDistance = 0
-   Cutting.LeadOut.TangentDistance = 0
-   Cutting.LeadIn.Elevation = 0
-   Cutting.LeadOut.Elevation = 0
-   Cutting.LeadIn.CompLength = 0
-   Cutting.LeadOut.CompLength = 0
-   Cutting.IsStartClosed = false
-   Cutting.IsEndClosed = false
-   Cutting.LeadIn.StartAddLength = 0
-   Cutting.LeadOut.EndAddLength = 0
-   Cutting.LeadIn.PerpDistance = 0
-   Cutting.LeadOut.PerpDistance = 0
-   if #( Proc.Pocket.SideFaces) == 2 then
-      Cutting.IsStartClosed = true
-      Cutting.IsEndClosed = true
-   elseif #( Proc.Pocket.SideFaces) == 1 then
-      if not Cutting.ToolInvert then
-         Cutting.FaceToMachine.CCWDirection = ( Cutting.FaceToMachine.VtN ^ Proc.Pocket.BottomFace.VtN)
-      else
-         Cutting.FaceToMachine.CCWDirection = - ( Cutting.FaceToMachine.VtN ^ Proc.Pocket.BottomFace.VtN)
-      end
-      if Cutting.FaceToMachine.CCWDirection * Proc.Pocket.SideFaces[1].VtN > 10 * GEO.EPS_SMALL then
-         if Cutting.Tool.IsCCW then
-            Cutting.IsStartClosed = true
-         else
-            Cutting.IsEndClosed = true
-         end
-      else
-         if Cutting.Tool.IsCCW then
-            Cutting.IsEndClosed = true
-         else
-            Cutting.IsStartClosed = true
-         end
-      end
-   end
-   local dAddLengthToReduce = sqrt( Cutting.Depth * Cutting.Tool.Diameter - Cutting.Depth * Cutting.Depth)
-   if Cutting.IsStartClosed then
-      Cutting.LeadIn.StartAddLength = -dAddLengthToReduce
-      Cutting.LeadIn.PerpDistance = 1
-   end
-   if Cutting.IsEndClosed then
-      Cutting.LeadOut.EndAddLength = -dAddLengthToReduce
-      Cutting.LeadOut.PerpDistance = 1
-   end
+   Cutting.LeadIn, Cutting.LeadOut = SawPlusChain.GetLeadInOut( Proc, Cutting)
 
    local bOk, sErr
 
@@ -4983,6 +4999,7 @@ function SawPlusChain.Make( Proc, b3Raw)
       Cutting.RadialOffset = dOriginalRadialOffset + Cutting.HorizontalSteps.StepLength * ( i - 1)
       bOk, sErr = SawPlusChain.ApplyMachining( Cutting, 'Cut_', b3Raw)
    end
+
    -- parametri della lavorazione con sega a catena
 
    -- lavorazione con sega a catena