diff --git a/LuaLibs/ProcessLapJoint.lua b/LuaLibs/ProcessLapJoint.lua
index 6a93761..b56a7f0 100644
--- a/LuaLibs/ProcessLapJoint.lua
+++ b/LuaLibs/ProcessLapJoint.lua
@@ -5824,6 +5824,11 @@ local function MakeMoreFaces( Proc, nPhase, nRawId, nPartId, dOvmHead, bSinglePa
          -- verifico se posso farlo con la sega-catena
          local bMakeChainSaw, sSawing, dMaxMat, dSawCornerRad, dSawThick, _, dSawWidth = VerifyChainSaw( Proc, dDimMin, dDimMax, dDepth)
          if bMakeChainSaw then
+            -- se forzata sega a catena devo verificare se inserire lo smusso
+            if bForceChainsaw and nChamfer > 0 then
+               local nOk, sErr = MakeChamfer( Proc, false, nAddGrpId, vtOrtho, b3Solid, nLundIdFace, dDepthCham)
+               if nOk < 0 then return -1, sErr end
+            end
             -- Ricalcolo l'affondamento tenendo conto di eventuale inclinazione
             local dSlDepth
             local frSlDh = Frame3d( Proc.Box:getCenter(), vtOrtho)