diff --git a/LuaLibs/ProcessDrill.lua b/LuaLibs/ProcessDrill.lua
index 04d512a..a7e2b36 100644
--- a/LuaLibs/ProcessDrill.lua
+++ b/LuaLibs/ProcessDrill.lua
@@ -392,36 +392,96 @@ function ProcessDrill.Make( Proc, nPhase, nRawId, nPartId)
       nSCC = MCH_SCC.NONE
    end
    EgtSetMachiningParam( MCH_MP.SCC, nSCC)
+   
+   -----------------------------------------
    -- aggiusto l'affondamento
-   local sMyWarn
+--   local sMyWarn
+--   local dMaxElev = dDepth
+--   local dToolAddLength = 0
+--   -- se c'è un taglio precedente di testa o coda posso impostare MaxElev per allungare il percorso
+--   -- considero solo i fori "entranti" in testa o coda
+--   if ( Proc.MachineAfterHeadCutId and vtExtr:getX() > 0) or ( Proc.MachineAfterTailCutId and vtExtr:getX() < 0) then
+--      local ptCen = EgtCP( AuxId, GDB_RT.GLOB)
+--      local bIntersectionOk, _, vDistance = EgtLineSurfTmInters( ptCen, -vtExtr, Proc.MachineAfterHeadCutId or Proc.MachineAfterTailCutId, GDB_RT.GLOB)
+--      dHoleToCutDistance = vDistance[1]
+--      -- il segno della distanza data dalla funzione di intersezione mi indica dove sia la geometria del foro
+--      if bIntersectionOk then
+--         if dHoleToCutDistance > 0 then
+--            dMaxElev = dLen - dHoleToCutDistance
+--         elseif dHoleToCutDistance < 0 then
+--            dMaxElev = -dHoleToCutDistance
+--         end
+--         dToolAddLength = dLen - dMaxElev
+--      end
+--   end
+--   if dDepth - dToolAddLength > dMaxDepth + 10 * GEO.EPS_SMALL then
+--      sMyWarn = 'Warning in drill : depth (' .. EgtNumToString( dDepth - dToolAddLength, 1) .. ') bigger than max tool depth (' .. EgtNumToString( dMaxDepth, 1) .. ')'
+--      if dMaxDepth == 0 or dToolAddLength == 0 then
+--         dDepth = dMaxDepth
+--         dMaxElev = dDepth
+--      elseif abs( dMaxElev - dDepth) > GEO.EPS_SMALL then
+--         dDepth = dLen
+--      end
+--      EgtOutLog( sMyWarn)
+--   end
+   ------------------------------------------
+   
+   -- aggiusto affondamento e MaxElev
    local dMaxElev = dDepth
-   local dToolAddLength = 0
-   -- se c'è un taglio precedente di testa o coda posso impostare MaxElev per allungare il percorso
-   -- considero solo i fori "entranti" in testa o coda
-   if ( Proc.MachineAfterHeadCutId and vtExtr:getX() > 0) or ( Proc.MachineAfterTailCutId and vtExtr:getX() < 0) then
-      local ptCen = EgtCP( AuxId, GDB_RT.GLOB)
-      local bIntersectionOk, _, vDistance = EgtLineSurfTmInters( ptCen, -vtExtr, Proc.MachineAfterHeadCutId or Proc.MachineAfterTailCutId, GDB_RT.GLOB)
-      dHoleToCutDistance = vDistance[1]
-      -- il segno della distanza data dalla funzione di intersezione mi indica dove sia la geometria del foro
-      if bIntersectionOk then
-         if dHoleToCutDistance > 0 then
-            dMaxElev = dLen - dHoleToCutDistance
-         elseif dHoleToCutDistance < 0 then
-            dMaxElev = -dHoleToCutDistance
+   local sMyWarn
+   if dDepth > dMaxDepth + 10 * GEO.EPS_SMALL then
+      -- se c'è un taglio precedente di testa o coda posso impostare MaxElev per allungare il percorso
+      -- considero solo i fori "entranti" in testa o coda
+      if (( Proc.MachineAfterHeadCutId and vtExtr:getX() > 0) or ( Proc.MachineAfterTailCutId and vtExtr:getX() < 0)) and dMaxDepth ~= 0 then
+         local ptCen = EgtCP( AuxId, GDB_RT.GLOB)
+         local bIntersectionOk, _, vDistance = EgtLineSurfTmInters( ptCen, -vtExtr, Proc.MachineAfterHeadCutId or Proc.MachineAfterTailCutId, GDB_RT.GLOB)
+         dHoleToCutDistance = vDistance[1]
+         -- setto MaxElev
+         -- il segno della distanza data dalla funzione di intersezione mi indica dove sia la geometria del foro
+         if bIntersectionOk then
+            if dHoleToCutDistance > 0 then
+               dMaxElev = dLen - dHoleToCutDistance
+            elseif dHoleToCutDistance < 0 then
+               dMaxElev = -dHoleToCutDistance
+            end
+            local dToolAddLength = dLen - dMaxElev
+            -- se l'utensile è comunque troppo corto lavoro il massimo possibile
+            if dDepth - dToolAddLength > dMaxDepth + 10 * GEO.EPS_SMALL then
+               sMyWarn = 'Warning in drill : depth (' .. EgtNumToString( dDepth - dToolAddLength, 1) .. ') bigger than max tool depth (' .. EgtNumToString( dMaxDepth, 1) .. ')'
+               dDepth = dLen
+            else
+               dMaxElev = dMaxElev - dLen + dDepth
+            end
+         -- se per qualche motivo fallisce l'intersezione torno al caso standard
+         else
+            sMyWarn = 'Warning in drill : depth (' .. EgtNumToString( dDepth, 1) .. ') bigger than max tool depth (' .. EgtNumToString( dMaxDepth, 1) .. ')'
+            dDepth = dMaxDepth
+            dMaxElev = dMaxDepth
          end
-         dToolAddLength = dLen - dMaxElev
-      end
-   end
-   if dDepth - dToolAddLength > dMaxDepth + 10 * GEO.EPS_SMALL then
-      sMyWarn = 'Warning in drill : depth (' .. EgtNumToString( dDepth - dToolAddLength, 1) .. ') bigger than max tool depth (' .. EgtNumToString( dMaxDepth, 1) .. ')'
-      if dMaxDepth == 0 or dToolAddLength == 0 then
+      -- caso standard
+      else
+         sMyWarn = 'Warning in drill : depth (' .. EgtNumToString( dDepth, 1) .. ') bigger than max tool depth (' .. EgtNumToString( dMaxDepth, 1) .. ')'
          dDepth = dMaxDepth
-         dMaxElev = dDepth
-      elseif abs( dMaxElev - dDepth) > GEO.EPS_SMALL then
-         dDepth = dLen
+         dMaxElev = dMaxDepth
+      end
+      if sMyWarn then
+         EgtOutLog( sMyWarn)
       end
-      EgtOutLog( sMyWarn)
    end
+   
+   
+   
+   
+   
+   
+   
+   
+   
+   
+   
+   
+   
+   
    EgtSetMachiningParam( MCH_MP.DEPTH, dDepth)
    -- Note utente con dichiarazione nessuna generazione sfridi per Vmill
    local sUserNotes = 'VMRS=0;'