diff --git a/LuaLibs/ProcessLapJoint.lua b/LuaLibs/ProcessLapJoint.lua
index f9924e7..17646f2 100644
--- a/LuaLibs/ProcessLapJoint.lua
+++ b/LuaLibs/ProcessLapJoint.lua
@@ -4800,6 +4800,16 @@ local function ManageAntiSplintBySaw( Proc, b3Raw, b3Solid, bIsU, vtN, nFacInd,
          local dSawThick = 0
          local dMaxDepth = 200
          local bAdj, dAng, dExtraOffs, sWarn2, nIdMach
+         -- Se faccia sulla quale cerca di applicare l'antisplint è chiusa e limitata da altre facce non lo applica
+         local FacetEdge = BL.GetEdgesInfo( Proc, Proc.Face[nFacet+1])
+         for nEdge = 1, #FacetEdge do
+            if AreSameVectorApprox( FacetEdge[nEdge].ToolDirection, vtN) and ( not FacetEdge[nEdge].IsStartOpen or not FacetEdge[nEdge].IsEndOpen) and not FacetEdge[nEdge].IsOpen then
+               sWarn2 = 'Warning : antisplint not applicable on closed face'
+               if not sWarn then sWarn = '' end
+               sWarn = EgtIf( #sWarn > 0, sWarn .. '\n' .. sWarn2, sWarn2)
+               return bMadeASbyBld, true, sWarn
+            end
+         end
          bMadeASbyBld, sWarn2, nIdMach, dSawThick, dMaxDepth, bAdj, dAng, dExtraOffs = MakeAntiSplintBySaw( Proc, nFacet, vtN, b3Raw, nFacInd, bReduceDepth, bMillDown)
          if not bMadeASbyBld then return bMadeASbyBld, false, sWarn2 end
          if sWarn2 then