diff --git a/LuaLibs/ProcessLapJoint.lua b/LuaLibs/ProcessLapJoint.lua
index 0159541..0c3663c 100644
--- a/LuaLibs/ProcessLapJoint.lua
+++ b/LuaLibs/ProcessLapJoint.lua
@@ -4598,7 +4598,6 @@ function SawPlusChain.IsTopologyOk( Proc)
       end
 end
 
-
 function SawPlusChain.GetBottomFace( Proc)
    -- la faccia di fondo ha sempre Fct - 1 adiacenze. Se si trovano più facce di fondo si sceglie quella con minor elevazione
    local vBottomFace = Topology.GetFacesWithGivenAdjacencyNumber( Proc, Proc.vAdj, Proc.Fct - 1)
@@ -4716,6 +4715,7 @@ function SawPlusChain.GetToolFromMachining( sMachiningName)
             Tool.Diameter = EgtTdbGetCurrToolParam( MCH_TP.DIAM) or 0
             Tool.Thickness = EgtTdbGetCurrToolParam(MCH_TP.THICK) or 0
             Tool.MaxDepth = EgtTdbGetCurrToolMaxDepth() or 0
+            Tool.SideStep = EgtTdbGetCurrToolValInNotes( MCH_TP.USERNOTES, 'SIDESTEP', 'd')
          -- sega a catena
          elseif Tool.Type == MCH_TY.MORTISE_STD then
             Tool.Length = EgtTdbGetCurrToolParam( MCH_TP.LEN) or 0
@@ -4754,15 +4754,31 @@ end
 
 function SawPlusChain.GetVerticalSteps( Proc, Machining)
    VerticalSteps = {}
-   VerticalSteps.Count = ceil( ( Proc.Pocket.Height - 10 * GEO.EPS_SMALL) / Machining.Tool.Thickness)
    VerticalSteps.StepLength = 0
+   VerticalSteps.Count = ceil( ( Proc.Pocket.Height - 10 * GEO.EPS_SMALL) / Machining.Tool.Thickness)
    if VerticalSteps.Count > 1 then
       VerticalSteps.StepLength = ( Proc.Pocket.Height - Machining.Tool.Thickness) / ( VerticalSteps.Count - 1)
+      VerticalSteps.MaxElev = VerticalSteps.StepLength * VerticalSteps.Count - 10 * GEO.EPS_SMALL
+      VerticalSteps.StepType = MCH_MILL_ST.ONEWAY
    end
 
    return VerticalSteps
 end
 
+function SawPlusChain.GetHorizontalSteps( Proc, Machining)
+   HorizontalSteps = {}
+   HorizontalSteps.StepLength = 0
+   HorizontalSteps.Count = 1
+   if Machining.Tool.SideStep then
+      HorizontalSteps.Count = ceil( ( Proc.Pocket.Depth - 10 * GEO.EPS_SMALL) / Machining.Tool.SideStep)
+      if HorizontalSteps.Count > 1 then
+         HorizontalSteps.StepLength = ( Proc.Pocket.Height - Machining.Tool.Thickness) / ( HorizontalSteps.Count - 1)
+      end
+   end
+
+   return HorizontalSteps
+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)
@@ -4787,6 +4803,14 @@ function SawPlusChain.ApplyMachining( Machining, sOperationNamePrefix, b3Raw)
    EgtSetMachiningParam( MCH_MP.LOPERP, Machining.LeadOut.PerpDistance)
    EgtSetMachiningParam( MCH_MP.STARTADDLEN, Machining.LeadIn.StartAddLength)
    EgtSetMachiningParam( MCH_MP.ENDADDLEN, Machining.LeadOut.EndAddLength)
+   EgtSetMachiningParam( MCH_MP.ENDADDLEN, Machining.LeadOut.EndAddLength)
+   EgtSetMachiningParam( MCH_MP.STEPTYPE, Machining.VerticalSteps.StepType)
+   EgtSetMachiningParam( MCH_MP.STEP, Machining.VerticalSteps.StepLength)
+   local sNotes
+   if Machining.VerticalSteps.MaxElev then
+      sNotes = EgtSetValInNotes( sNotes, 'MaxElev', Machining.VerticalSteps.MaxElev)
+   end
+   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())
@@ -4887,12 +4911,19 @@ function SawPlusChain.Make( Proc, b3Raw)
       Cutting.Depth = Cutting.Tool.MaxDepth
       Cutting.RadialOffset = Proc.Pocket.Depth - Cutting.Depth
    end
-   -- offset longitudinale
-   Cutting.LongitudinalOffset = 0
    -- faceuse
    Cutting.Faceuse = BL.GetNearestOrthoOpposite( Proc.Pocket.Direction)
    -- SCC
    Cutting.SCC = SawPlusChain.GetSCC( Proc.Pocket.Direction)
+   -- step verticale e offset longitudinale
+   Cutting.VerticalSteps = SawPlusChain.GetVerticalSteps( Proc, Cutting)
+   if Cutting.ToolInvert and Cutting.VerticalSteps.Count > 1 then
+      Cutting.LongitudinalOffset = - Proc.Pocket.Height
+   else
+      Cutting.LongitudinalOffset = 0
+   end
+   -- step orizzontale
+   Cutting.HorizontalSteps = SawPlusChain.GetHorizontalSteps( Proc, Cutting)
    -- approccio e retrazione
    Cutting.LeadIn = {}
    Cutting.LeadOut = {}
@@ -4944,17 +4975,8 @@ function SawPlusChain.Make( Proc, b3Raw)
    end
 
    -- lavorazione con lama
-   Cutting.VerticalSteps = SawPlusChain.GetVerticalSteps( Proc, Cutting)
    local bOk, sErr
-   for i = 1, Cutting.VerticalSteps.Count do
-      if Cutting.ToolInvert then
-         Cutting.LongitudinalOffset = ( ( i - 1) * -Cutting.VerticalSteps.StepLength) - Cutting.Tool.Thickness
-      else
-         Cutting.LongitudinalOffset = ( i - 1) * Cutting.VerticalSteps.StepLength
-      end
-
-      bOk, sErr = SawPlusChain.ApplyMachining( Cutting, 'Cut_', b3Raw)
-   end
+   bOk, sErr = SawPlusChain.ApplyMachining( Cutting, 'Cut_', b3Raw)
 
    -- parametri della lavorazione con sega a catena