diff --git a/LuaLibs/MachiningLib.lua b/LuaLibs/MachiningLib.lua
index 8d1bc16..b4faff5 100644
--- a/LuaLibs/MachiningLib.lua
+++ b/LuaLibs/MachiningLib.lua
@@ -3,6 +3,7 @@
 -- 2022/05/07 ES Profonde modifiche per scelta ottimale lavorazioni in macchine con più teste.
 -- 2022/07/27 Aggiunta la gestione del tipo di foratura "AngleDrill" per fori molto inclinati
 -- 2022/11/02 Modificata scelta utensile ottimizzata. Ora se c'è un utensile più grande disponibile si dà preferenza a quello.
+-- 2022/11/25 Per FindMilling implementata la possibilità di escludere la testa H3 dalla ricerca utensile.
 
 -- Tabella per definizione modulo
 local MachiningLib = {}
@@ -108,8 +109,9 @@ local function SetCurrMachiningAndTool( sMachName)
    local sHead = EgtTdbGetCurrToolParam( MCH_TP.HEAD)
    local nHead = tonumber( sHead:sub( 2, #sHead))
    local bH2 = ( nHead >= 21 and nHead <= 29)
+   local bH3 = ( nHead >= 31 and nHead <= 39) 
    local bFixed = ( vFixedHeads[nHead])
-   return bActive, sTool, bH2, bFixed
+   return bActive, sTool, bH2, bFixed, bH3
 end
 
 ---------------------------------------------------------------------
@@ -222,7 +224,7 @@ function ReturnParams( MachiningType, MachiningName, sType, ToolParams)
 end
 
 ---------------------------------------------------------------------
-local function FindMachining( MachiningType, sType, Params, bTopHead, bDownHead)
+local function FindMachining( MachiningType, sType, Params, bTopHead, bDownHead, bExcludeH3)
    if bTopHead == nil and bDownHead == nil then
       bTopHead = true
       bDownHead = false
@@ -273,8 +275,8 @@ local function FindMachining( MachiningType, sType, Params, bTopHead, bDownHead)
          _, sMachiningType = EgtEndsWith( Machining.Type, '_H2')
       end
       -- recupero dati utensile
-      local bToolActive, sToolName, bH2, bFixed = SetCurrMachiningAndTool( Machining.Name)
-      if Machining.On and sMachiningType == sType and bToolActive then
+      local bToolActive, sToolName, bH2, bFixed, bH3 = SetCurrMachiningAndTool( Machining.Name)
+      if Machining.On and sMachiningType == sType and bToolActive and ( not bH3 or bH3 == not bExcludeH3) then
          local bOk, ToolParams = VerifyTool( MachiningType, sType, Params, bH2)
          if bOk then
             if MachineHeadUse == ONE_HEAD then
@@ -384,8 +386,8 @@ function MachiningLib.FindAngleDrilling( dDiam, dDepth, bTopHead, bDownHead)
 end
 
 ---------------------------------------------------------------------
-function MachiningLib.FindMilling( sType, dDepth, sTuuidMstr, dMaxDiam, dMaxTotLen, bTopHead, bDownHead)
-   return FindMachining( MCH_MY.MILLING, sType, { Depth = dDepth, TuuidMstr = sTuuidMstr, MaxDiam = dMaxDiam, MaxTotLen = dMaxTotLen}, bTopHead, bDownHead)
+function MachiningLib.FindMilling( sType, dDepth, sTuuidMstr, dMaxDiam, dMaxTotLen, bTopHead, bDownHead, bExcludeH3)
+   return FindMachining( MCH_MY.MILLING, sType, { Depth = dDepth, TuuidMstr = sTuuidMstr, MaxDiam = dMaxDiam, MaxTotLen = dMaxTotLen}, bTopHead, bDownHead, bExcludeH3)
 end
 
 ---------------------------------------------------------------------
diff --git a/LuaLibs/ProcessLongCut.lua b/LuaLibs/ProcessLongCut.lua
index d47bc00..f72e26b 100644
--- a/LuaLibs/ProcessLongCut.lua
+++ b/LuaLibs/ProcessLongCut.lua
@@ -860,7 +860,8 @@ function ProcessLongCut.Make( Proc, nPhase, nRawId, nPartId, bCustUseBlade, nCus
       -- recupero la lavorazione
       local bDownHead = ( nSide == - 1)
       sMchType = EgtIf( bDownHead, 'Long2Cut_H2', 'Long2Cut')
-      local sMilling = ML.FindMilling( sMchType, dElev, nil, nil, nil, not bDownHead, bDownHead)
+      local bExcludeH3 = bLarghAsFace and abs( nSide) ~= 1
+      local sMilling = ML.FindMilling( sMchType, dElev, nil, nil, nil, not bDownHead, bDownHead, bExcludeH3)
       if not sMilling then
          local sErr = 'Error : milling '..sMchType..' not found in library'
          EgtOutLog( sErr)