diff --git a/LuaLibs/BeamLib.lua b/LuaLibs/BeamLib.lua
index 71d5ac1..316f655 100644
--- a/LuaLibs/BeamLib.lua
+++ b/LuaLibs/BeamLib.lua
@@ -403,7 +403,7 @@ end
 
 -------------------------------------------------------------------------------------------------------------
 -- funzione con valore di default in caso la GetSetupInfo della testa della macchina non avesse la funzione definita
-function BeamLib.GetMinNzDownUpDefault( b3Raw, vtNFace, vtToolDirection)
+function BeamLib.GetMinNzDownUpDefault( b3Raw, vtNFace, vtToolDirection, Tool)
    return -2
 end
 
diff --git a/LuaLibs/FaceData.lua b/LuaLibs/FaceData.lua
index 0172baf..3c9c412 100644
--- a/LuaLibs/FaceData.lua
+++ b/LuaLibs/FaceData.lua
@@ -207,9 +207,9 @@ end
 -------------------------------------------------------------------------------------------------------------
 local function CompareEdges( EdgeA, EdgeB)
    -- prima i lati con facce adiacenti
-   if EdgeA.idAdjacentFace and not ( EdgeB.idAdjacentFace) then
+   if ( EdgeA.idAdjacentFace > -1) and ( EdgeB.idAdjacentFace < 0) then
       return true
-   elseif not ( EdgeA.idAdjacentFace) and EdgeB.idAdjacentFace then
+   elseif ( EdgeA.idAdjacentFace < 0) and ( EdgeB.idAdjacentFace > -1) then
       return false
    -- se entrambi con facce adiacenti, si sceglie quello convesso (non chiuso)
    else
@@ -328,11 +328,10 @@ local function GetBottomFaces( Proc)
    
    local EdgesSorted = {}
    for i = 1, #BottomFaces[1].Edges do
-      if not BottomFaces[1].Edges[i].bIsOpen then
-         table.insert( EdgesSorted, {})
-         EdgesSorted[#EdgesSorted].nIndex = i
-         EdgesSorted[#EdgesSorted].dLength = BottomFaces[1].Edges[i].dLength
-      end
+      table.insert( EdgesSorted, {})
+      EdgesSorted[#EdgesSorted].nIndex = i
+      EdgesSorted[#EdgesSorted].dLength = BottomFaces[1].Edges[i].dLength
+      EdgesSorted[#EdgesSorted].idAdjacentFace = BottomFaces[1].Edges[i].idAdjacentFace
    end
    table.sort( EdgesSorted, CompareEdges)
    local nFirstLongEdgeIndex
@@ -409,10 +408,10 @@ local function GetLongFaces( Proc, MainFaces)
       local FacesNotAdjacent = GetNotAdjacentFaces( Proc, idFirstLongFace)
       idSecondLongFace = FacesNotAdjacent[1].id
    else
-      if not BottomFace.MainEdges.LongEdges[1].bIsOpen then
+      if BottomFace.MainEdges.LongEdges[1].idAdjacentFace > -1 then
          idFirstLongFace = BottomFace.MainEdges.LongEdges[1].idAdjacentFace
       end
-      if not BottomFace.MainEdges.LongEdges[2].bIsOpen then
+      if BottomFace.MainEdges.LongEdges[2].idAdjacentFace > -1 then
          idSecondLongFace = BottomFace.MainEdges.LongEdges[2].idAdjacentFace
       end
    end
diff --git a/StrategyLibs/BLADETOWASTE.lua b/StrategyLibs/BLADETOWASTE.lua
index 860f596..598f0b9 100644
--- a/StrategyLibs/BLADETOWASTE.lua
+++ b/StrategyLibs/BLADETOWASTE.lua
@@ -208,7 +208,7 @@ local function GetBestBlade( Proc, Part, Face, OptionalParameters)
       sChosenBladeType = 'Bottom'
    -- se lama sopra va verificato se va usata in DownUp
    elseif nChosenToolIndex == nToolIndexTop then
-      local dMinNzDownUp = TOOLS[nToolIndexTop].SetupInfo.GetMinNzDownUp( Part.b3Raw, Face.vtN)
+      local dMinNzDownUp = TOOLS[nToolIndexTop].SetupInfo.GetMinNzDownUp( Part.b3Raw, Face.vtN, nil, TOOLS[nToolIndexTop])
       local dCurrentResidualDepth = dElevationTopDownUp - TOOLS[nToolIndexTop].dMaxDepth
       if Face.vtN:getZ() < dMinNzDownUp then
          if ( dCurrentResidualDepth > 10 * GEO.EPS_SMALL) then
@@ -359,7 +359,7 @@ local function CutWithDicing( Proc, Part, OptionalParameters)
    end
    
    -- limite per taglio DownUp
-   local dMinNzDownUp = TOOLS[nToolIndex].SetupInfo.GetMinNzDownUp( Part.b3Raw, Face1.vtN)
+   local dMinNzDownUp = TOOLS[nToolIndex].SetupInfo.GetMinNzDownUp( Part.b3Raw, Face1.vtN, nil, TOOLS[nToolIndex])
    
    -- calcolo dimensione cubetto e eventuale cubetto ridotto (tagli orizzontali con affondamento verticale)
    local dDiceDimension = min( TOOLS[nToolIndex].dMaxMaterial, BeamData.MAX_DIM_DICE)
diff --git a/StrategyLibs/FACEBYBLADE.lua b/StrategyLibs/FACEBYBLADE.lua
index b44a0c2..c2d06f8 100644
--- a/StrategyLibs/FACEBYBLADE.lua
+++ b/StrategyLibs/FACEBYBLADE.lua
@@ -223,7 +223,7 @@ function FACEBYBLADE.Make( Proc, Part, FaceToMachine, EdgeToMachine, OptionalPar
    -- se si conosce il limite downUp (utensile forzato o downUp forzato) si decide se invertire (ToolInvert)
    -- TODO esiste un limite downUp massimo per la lama da sopra??
    if nToolIndex and not dMinNzDownUp then
-      dMinNzDownUp = TOOLS[nToolIndex].SetupInfo.GetMinNzDownUp( Part.b3Raw, FaceToMachine.vtN, Cutting.vtToolDirection)
+      dMinNzDownUp = TOOLS[nToolIndex].SetupInfo.GetMinNzDownUp( Part.b3Raw, FaceToMachine.vtN, Cutting.vtToolDirection, TOOLS[nToolIndex])
    end
    if dMinNzDownUp and FaceToMachine.vtN:getZ() < dMinNzDownUp then
       Cutting.bToolInvert = true
@@ -249,7 +249,7 @@ function FACEBYBLADE.Make( Proc, Part, FaceToMachine, EdgeToMachine, OptionalPar
       local ToolInfo = MachiningLib.FindBlade( Proc, ToolSearchParameters)
       -- ora che l'utensile è scelto, se non era definito l'angolo di DownUp lo verifico per decidere se invertire
       if ToolInfo.nToolIndex and not dMinNzDownUp then
-         dMinNzDownUp = TOOLS[ToolInfo.nToolIndex].SetupInfo.GetMinNzDownUp( Part.b3Raw, FaceToMachine.vtN, Cutting.vtToolDirection)
+         dMinNzDownUp = TOOLS[ToolInfo.nToolIndex].SetupInfo.GetMinNzDownUp( Part.b3Raw, FaceToMachine.vtN, Cutting.vtToolDirection, TOOLS[ToolInfo.nToolIndex])
          if FaceToMachine.vtN:getZ() < dMinNzDownUp then
             Cutting.bToolInvert = true
          end
diff --git a/StrategyLibs/FACEBYMILL.lua b/StrategyLibs/FACEBYMILL.lua
index 9241198..b7a32a7 100644
--- a/StrategyLibs/FACEBYMILL.lua
+++ b/StrategyLibs/FACEBYMILL.lua
@@ -210,7 +210,7 @@ function FACEBYMILL.Make( Proc, Part, FaceToMachine, EdgeToMachine, OptionalPara
    
    -- se si conosce il limite downUp (utensile forzato o downUp forzato) si decide se invertire (ToolInvert)
    if nToolIndex and not dMinNzDownUp then
-      dMinNzDownUp = TOOLS[nToolIndex].SetupInfo.GetMinNzDownUp( Part.b3Raw, FaceToMachine.vtN, Milling.vtToolDirection)
+      dMinNzDownUp = TOOLS[nToolIndex].SetupInfo.GetMinNzDownUp( Part.b3Raw, FaceToMachine.vtN, Milling.vtToolDirection, TOOLS[nToolIndex])
    end
    if dMinNzDownUp and FaceToMachine.vtN:getZ() < dMinNzDownUp then
       Milling.bToolInvert = true
@@ -241,7 +241,7 @@ function FACEBYMILL.Make( Proc, Part, FaceToMachine, EdgeToMachine, OptionalPara
       local ToolInfo = MachiningLib.FindMill( Proc, ToolSearchParameters)
       -- ora che l'utensile è scelto, se non era definito l'angolo di DownUp lo verifico per decidere se invertire
       if ToolInfo.nToolIndex and not dMinNzDownUp then
-         dMinNzDownUp = TOOLS[ToolInfo.nToolIndex].SetupInfo.GetMinNzDownUp( Part.b3Raw, FaceToMachine.vtN, Milling.vtToolDirection)
+         dMinNzDownUp = TOOLS[ToolInfo.nToolIndex].SetupInfo.GetMinNzDownUp( Part.b3Raw, FaceToMachine.vtN, Milling.vtToolDirection, TOOLS[ToolInfo.nToolIndex])
          if FaceToMachine.vtN:getZ() < dMinNzDownUp then
             Milling.bToolInvert = true
          end