diff --git a/LuaLibs/ProcessLapJoint.lua b/LuaLibs/ProcessLapJoint.lua
index a2c708f..ac015fa 100644
--- a/LuaLibs/ProcessLapJoint.lua
+++ b/LuaLibs/ProcessLapJoint.lua
@@ -4657,7 +4657,7 @@ local function MakeMoreFaces( Proc, nPhase, nRawId, nPartId, dOvmHead, bSinglePa
             local dChainSawExtraLength = EgtTdbGetCurrToolParam( MCH_TP.TOTLEN) - dChainSawTHLength - dMaxMat
             local dMaxMatReduction = 0
             local dToolEntryAngle, _, _, dTanToolEntryAngle = GetToolEntryAngle( Proc, vtOrtho)
-            if dToolEntryAngle > 10 * GEO.EPS_ANG_SMALL then
+            if dToolEntryAngle > 10 * GEO.EPS_ANG_SMALL and dTanToolEntryAngle then
                dMaxMatReduction = max( ( ( 2 * BD.C_SIMM_ENC - dSawWidth) / ( 2 * dTanToolEntryAngle) - dChainSawExtraLength) - 5, 0)
             end
             local dWorkDepth = dMaxMat - dMaxMatReduction
diff --git a/LuaLibs/ProcessLongDoubleCut.lua b/LuaLibs/ProcessLongDoubleCut.lua
index bfda135..3bee763 100644
--- a/LuaLibs/ProcessLongDoubleCut.lua
+++ b/LuaLibs/ProcessLongDoubleCut.lua
@@ -879,8 +879,7 @@ function ProcessLong2Cut.Make( Proc, nPhase, nRawId, nPartId, bForcedBladeMaster
                   -- imposto posizione braccio porta testa per non ingombrare agli estremi
                   EgtSetMachiningParam( MCH_MP.SCC, nSCC)
                   -- imposto angolo 3° asse rot
-                  local bDownHead = not bIsTopBladeCurrent
-                  local vtOut = EgtIf( vtN:getX() > 0, X_AX(), -X_AX())
+                  local vtOut = EgtIf( vtN[vOrd[j]]:getX() > 0, X_AX(), -X_AX())
                   EgtSetMachiningParam( MCH_MP.BLOCKEDAXIS, BL.GetBlockedAxis( sCutting, 'perpendicular', b3Raw, vtN, vtOut))
                   -- eseguo
                   if not ML.ApplyMachining( true, false) then
@@ -1072,7 +1071,7 @@ function ProcessLong2Cut.Make( Proc, nPhase, nRawId, nPartId, bForcedBladeMaster
                -- determino e imposto l'utilizzo della faccia
                EgtSetMachiningParam( MCH_MP.FACEUSE, vFaceUse[vOrd[j]])
                -- imposto angolo 3° asse rot
-               local vtOut = EgtIf( vtN:getX() > 0, X_AX(), -X_AX())
+               local vtOut = EgtIf( vtN[vOrd[j]]:getX() > 0, X_AX(), -X_AX())
                EgtSetMachiningParam( MCH_MP.BLOCKEDAXIS, BL.GetBlockedAxis( sCutting, 'perpendicular', b3Raw, vtN, vtOut))
                -- eseguo
                if not ML.ApplyMachining( true, false) then