diff --git a/LuaLibs/ProcessLapJoint.lua b/LuaLibs/ProcessLapJoint.lua
index 5526401..0b63fe5 100644
--- a/LuaLibs/ProcessLapJoint.lua
+++ b/LuaLibs/ProcessLapJoint.lua
@@ -6966,7 +6966,7 @@ local function MakeLongMoreFaces( Proc, nPhase, nRawId, nPartId, dOvmHead)
       -- superficie di fondo
       nSurfBottomId = EgtSurfTmPlaneInBBox( nAddGrpId, ptMaxBox, vtOrtho, b3SolidExtended, GDB_ID.ROOT)
       -- calcolo di quanto allargare le superfici
-      if not dAddLen then
+      if dAddLen == 0 then
          local dWidth = EgtIf( Proc.AffectedFaces.Front, Proc.Box:getDimZ(), Proc.Box:getDimY())
          dAddLen = min( dWidth, 100) / 2
       end
diff --git a/LuaLibs/ProcessStepJointNotch.lua b/LuaLibs/ProcessStepJointNotch.lua
index 6c01f95..dbb586a 100644
--- a/LuaLibs/ProcessStepJointNotch.lua
+++ b/LuaLibs/ProcessStepJointNotch.lua
@@ -132,7 +132,12 @@ local function MakePocket( Proc, nPartId, ptPs, vtN, nFaceRef, nDiffWidth, sMchF
    -- calcolo il diametro utensile
    local dDiamTool
    if nUseRoughTool == 1 then
-      dDiamTool = max( 80, min( tBHx[nFaceRef][1], tBHx[nFaceRef][2]))
+      -- se feature passante prendo utensile più grande possibile
+      if ( Proc.AffectedFaces.Top and Proc.AffectedFaces.Bottom) or ( Proc.AffectedFaces.Front and Proc.AffectedFaces.Back) then
+         dDiamTool = nil
+      else
+         dDiamTool = max( 80, min( tBHx[nFaceRef][1], tBHx[nFaceRef][2]))
+      end
    else
       -- se non uso truciolatore prendo il valore dalle dimensioni minime delle facce
       dDiamTool = min( tBHx[nFaceRef][1], tBHx[nFaceRef][2])