diff --git a/LuaLibs/ProcessLapJoint.lua b/LuaLibs/ProcessLapJoint.lua
index 658d061..4de3a20 100644
--- a/LuaLibs/ProcessLapJoint.lua
+++ b/LuaLibs/ProcessLapJoint.lua
@@ -3833,7 +3833,7 @@ local function MakeByPockets( Proc, nPhase, nRawId, nPartId, nChamfer, dDepthCha
 end
 
 ---------------------------------------------------------------------
-local function ManageAntiSplintBySaw( Proc, b3Raw, bIsU, vtN, nFacet, nFacInd, sWarn, bMillDown, bReduceDepth)
+local function ManageAntiSplintBySaw( Proc, b3Raw, bIsU, vtN, nFacInd, sWarn, bMillDown, bReduceDepth)
 
    local bMadeASbyBld = false
    local nNumFac = EgtIf( bIsU, 2, 1)
@@ -5013,9 +5013,10 @@ local function MakeMoreFaces( Proc, nPhase, nRawId, nPartId, dOvmHead, bSinglePa
                      -- esegue antischeggia di lama se forma U o L con feature passante in Y o Z, oppure se feature a furma U e con 3 facce oppore a forma a L e con 2 facce
                      local bMadeASbyBld = false
                      local bPassThrou = ( Proc.Box:getDimY() > b3Raw:getDimY() - 1 or Proc.Box:getDimZ() > b3Raw:getDimZ() - 1)
-                     if nChamfer < 2 and nQAntisplintResult == 1 and ((( bIsU or bIsL) and bPassThrou) or ( Proc.Fct == 3 and bIsU) or (Proc.Fct == 2 and bIsL)) then
+                     local bPassEdge = ((( bIsU and Proc.Fct == 3) or ( bIsL and Proc.Fct == 2)) and bSinglePart and Proc.Box:getDimX() < 0.9 * b3Raw:getDimX())
+                     if nChamfer < 2 and nQAntisplintResult == 1 and (( bIsU or bIsL) and ( bPassThrou or bPassEdge)) then
                         local bOk
-                        bMadeASbyBld, bOk, sWarn = ManageAntiSplintBySaw( Proc, b3Raw, bIsU, vtN, nFacet, nFacInd, sWarn, bMillDown, true)
+                        bMadeASbyBld, bOk, sWarn = ManageAntiSplintBySaw( Proc, b3Raw, bIsU, vtN, nFacInd, sWarn, bMillDown, true)
                         if not bOk then return false, sWarn end
                      end
                      -- in base al flag interno e al numero di facce e se ha forma ad U:  provo prima la svuotatura sul fianco e 
@@ -5142,9 +5143,10 @@ local function MakeMoreFaces( Proc, nPhase, nRawId, nPartId, dOvmHead, bSinglePa
             -- esegue antischeggia di lama se forma U o L con feature passante in Y o Z, oppure se feature a furma U e con 3 facce oppore a forma a L e con 2 facce
             local bMadeASbyBld = false
             local bPassThrou = ( Proc.Box:getDimY() > b3Raw:getDimY() - 1 or Proc.Box:getDimZ() > b3Raw:getDimZ() - 1)
-            if nChamfer < 2 and nQAntisplintResult == 1 and ((( bIsU or bIsL) and bPassThrou) or ( Proc.Fct == 3 and bIsU) or (Proc.Fct == 2 and bIsL)) then
+            local bPassEdge = ((( bIsU and Proc.Fct == 3) or ( bIsL and Proc.Fct == 2)) and bSinglePart and Proc.Box:getDimX() < 0.9 * b3Raw:getDimX())
+            if nChamfer < 2 and nQAntisplintResult == 1 and (( bIsU or bIsL) and ( bPassThrou or bPassEdge)) then
                local bOk
-               bMadeASbyBld, bOk, sWarn = ManageAntiSplintBySaw( Proc, b3Raw, bIsU, vtN, nFacet, nFacInd, sWarn, bMillDown)
+               bMadeASbyBld, bOk, sWarn = ManageAntiSplintBySaw( Proc, b3Raw, bIsU, vtN, nFacInd, sWarn, bMillDown)
                if not bOk then return false, sWarn end
             end
             if nChamfer < 2 and nQAntisplintResult == 2 then