diff --git a/LuaLibs/MachiningLib.lua b/LuaLibs/MachiningLib.lua
index f2b58f6..cfce39b 100644
--- a/LuaLibs/MachiningLib.lua
+++ b/LuaLibs/MachiningLib.lua
@@ -170,7 +170,7 @@ function VerifyTool( Machining, MachiningType, Params, bH2)
          return VerifyDrillPocket( Machining, Params.Diam, Params.Depth, bH2)
       end
    elseif MachiningType == MCH_MY.SAWING then
-      return true, { H2 = bH2}
+      return ( not Params.Depth or Machining.Tool.MaxMat > Params.Depth - GEO.EPS_SMALL), { H2 = bH2}
    elseif MachiningType == MCH_MY.MILLING then
       return VerifyMill( Machining, Params.Depth, Params.TuuidMstr, Params.MaxDiam, Params.MaxTotLen, bH2)
    elseif MachiningType == MCH_MY.POCKETING then
@@ -450,8 +450,8 @@ local function FindMachining( MachiningType, sType, Params, bTopHead, bDownHead,
 end
 
 ---------------------------------------------------------------------
-function MachiningLib.FindCutting( sType, bTopHead, bDownHead)
-   return FindMachining( MCH_MY.SAWING, sType, nil, bTopHead, bDownHead)
+function MachiningLib.FindCutting( sType, bTopHead, bDownHead, dDepth, sSortingCriterion)
+   return FindMachining( MCH_MY.SAWING, sType, { Depth = dDepth}, bTopHead, bDownHead, nil, nil, sSortingCriterion)
 end
 
 ---------------------------------------------------------------------
diff --git a/LuaLibs/ProcessHeadCut.lua b/LuaLibs/ProcessHeadCut.lua
index 96f20a7..51873a5 100644
--- a/LuaLibs/ProcessHeadCut.lua
+++ b/LuaLibs/ProcessHeadCut.lua
@@ -365,7 +365,7 @@ function ProcessHeadCut.Make( Proc, nPhase, nRawId, nPartId, dOvmHead, bNeedHCut
    -- eventuali informazioni sul tipo di finitura
    local nQ05 = EgtGetInfo( nOriId or GDB_ID.NULL, 'Q05', 'i') or 0
    -- recupero la lavorazione
-   local sCutting = ML.FindCutting( 'HeadSide')
+   local sCutting = ML.FindCutting( 'HeadSide', nil, nil, nil, 'Longest')
    if not sCutting then
       local sErr = 'Error : cutting not found in library'
       EgtOutLog( sErr)
diff --git a/LuaLibs/ProcessLapJoint.lua b/LuaLibs/ProcessLapJoint.lua
index d362ae0..c3820e0 100644
--- a/LuaLibs/ProcessLapJoint.lua
+++ b/LuaLibs/ProcessLapJoint.lua
@@ -4750,6 +4750,7 @@ SawPlusChain.ApplyOnlySawblade = false
 function SawPlusChain.IsTopologyOk( Proc)
    if Proc.TopologyLongName == 'Pocket-Blind-RightAngles-Parallel-5' or
       Proc.TopologyLongName == 'Groove-Through-RightAngles-Parallel-3' or
+      Proc.TopologyLongName == 'Groove-Through-RightAngles-NotParallel-3' or
       Proc.TopologyLongName == 'Groove-Blind-RightAngles-Parallel-4'  or
       Proc.TopologyLongName == 'Tunnel-Through-RightAngles-Parallel-4' then
 
@@ -5268,11 +5269,16 @@ function SawPlusChain.Saw.CalculateMachiningParameters( Proc, FaceToMachine, Edg
    end
 
    -- ricerca lavorazione
-   Cutting.Name = ML.FindCutting( 'HeadSide', true, false)
+   Cutting.Name = ML.FindCutting( 'HeadSide', true, false, abs( EdgeToMachine.Elevation))
    if not Cutting.Name then
-      Cutting.Message = 'Feature '.. Proc.FeatureId .. ' : strategy ' .. SawPlusChain.Name .. ' not applicable - saw blade not found'
-      Cutting.CanApply = false
-      EgtOutLog( Cutting.Message)
+      -- ricerca lavorazione senza considerare massima elevazione
+      Cutting.Name = ML.FindCutting( 'HeadSide', true, false, nil, 'Longest')
+      if not Cutting.Name then
+         Cutting.Message = 'Feature '.. Proc.FeatureId .. ' : strategy ' .. SawPlusChain.Name .. ' not applicable - saw blade not found'
+         Cutting.CanApply = false
+         EgtOutLog( Cutting.Message)
+         return Cutting
+      end
    end
    Cutting.Type = MCH_OY.MILLING
    Cutting.Tool = SawPlusChain.GetToolFromMachining( Cutting.Name)
@@ -5673,7 +5679,7 @@ function SawPlusChain.Make( bOnlySaw, Proc, nRawId)
       end
    else
       -- se la lama non è arrivata sul fondo e c'è almeno un lato aperto va lavorato
-      if Cutting.RadialOffset > 10 * GEO.EPS_SMALL then
+      if Cutting.CanApply and Cutting.RadialOffset > 10 * GEO.EPS_SMALL then
          -- eventuale lavorazione di lama - lato della tasca da cui inizia la lavorazione
          if Proc.MainFaces.LongFace.Edges.BottomEdge.IsStartOpen then
             Cutting = SawPlusChain.Saw.CalculateMachiningParameters( Proc, Proc.MainFaces.LongFace, Proc.MainFaces.LongFace.Edges.SideEdges.StartEdge)
diff --git a/LuaLibs/ProcessSplit.lua b/LuaLibs/ProcessSplit.lua
index ff3a78d..4ee97e2 100644
--- a/LuaLibs/ProcessSplit.lua
+++ b/LuaLibs/ProcessSplit.lua
@@ -573,7 +573,7 @@ function ProcessSplit.Make( Proc, nPhase, nRawId, nPartId, nOrd, sDownOrSideOrSt
       if not bOkc then return bOkc, sErrC end
    end
    -- recupero la lavorazione
-   local sCutting = ML.FindCutting( 'TailSide')
+   local sCutting = ML.FindCutting( 'TailSide', nil, nil, nil, 'Longest')
    if not sCutting then
       local sErr = 'Error on process ' .. tostring( Proc.Id) .. ' cutting not found in library'
       EgtOutLog( sErr)