diff --git a/LuaLibs/FacesBySaw.lua b/LuaLibs/FacesBySaw.lua
index e9d60ac..1e68048 100644
--- a/LuaLibs/FacesBySaw.lua
+++ b/LuaLibs/FacesBySaw.lua
@@ -410,7 +410,7 @@ function FacesBySaw.MakeOne( nSurfId, nFacet, sCutting, dSawDiam, Par5, dVzLimDw
       end
    else
       if BD.TURN == 2 then
-         if vtRef:getZ() > -0.01 then
+         if vtOrthO:getZ() > -0.01 then
             nSCC = MCH_SCC.ADIR_ZP
          else
             nSCC = MCH_SCC.ADIR_ZM
@@ -474,7 +474,7 @@ function FacesBySaw.MakeOne( nSurfId, nFacet, sCutting, dSawDiam, Par5, dVzLimDw
    EgtSetMachiningParam( MCH_MP.ENDADDLEN, dAllEnd - dAccEnd)
    -- imposto angolo 3° asse rot
    local nInd = EgtIf( bMaximizeVerticalDepth, 0, 1)
-   EgtSetMachiningParam( MCH_MP.BLOCKEDAXIS, BL.GetSawBlockedAxis( nInd, bDownHead, b3Raw, vtN, vtOut))
+   EgtSetMachiningParam( MCH_MP.BLOCKEDAXIS, BL.GetSawBlockedAxis( nInd, bDownHead, b3Raw, vtN, vtOrthO))
    -- eventuali note
    if sNotes and #sNotes > 0 then EgtSetMachiningParam( MCH_MP.USERNOTES, sNotes) end
    -- eseguo