diff --git a/LuaLibs/WProcessFreeContour.lua b/LuaLibs/WProcessFreeContour.lua
index 09148ee..b4471fd 100644
--- a/LuaLibs/WProcessFreeContour.lua
+++ b/LuaLibs/WProcessFreeContour.lua
@@ -1149,7 +1149,7 @@ local function AddMillings( sMilling, vFace, Proc, nRawId, b3Raw, nConeCut, nAdd
          if nConeCut == 1 then EgtSetMachiningParam( MCH_MP.LEAVETAB, false) end
          -- aggiungo geometria
          EgtSetMachiningGeometry( {{ Proc.Id, vFace[i].Fac}})
-         local dSal = EgtIf( #vFace == 1, -dMillDiam / 2, 0)
+         local dSal = EgtIf( #vFace == 1 or vFace[i].PrevAng < -30, -dMillDiam / 2, 0)
          local dEal = vFace[i].Whisk - vFace[i].Len
          EgtSetMachiningParam( MCH_MP.STARTADDLEN, dSal)
          EgtSetMachiningParam( MCH_MP.ENDADDLEN, dEal)