diff --git a/LuaLibs/ProcessLongDoubleCut.lua b/LuaLibs/ProcessLongDoubleCut.lua
index 8abecf2..884c49f 100644
--- a/LuaLibs/ProcessLongDoubleCut.lua
+++ b/LuaLibs/ProcessLongDoubleCut.lua
@@ -1,4 +1,4 @@
--- ProcessLongDoubleCut.lua by Egaltech s.r.l. 2019/11/24
+-- ProcessLongDoubleCut.lua by Egaltech s.r.l. 2019/11/25
 -- Gestione calcolo doppio taglio longitudinale per Travi
 
 -- Tabella per definizione modulo
@@ -68,17 +68,18 @@ function ProcessLong2Cut.Make( Proc, nPhase, nRawId, nPartId)
    if bInt then
       bConvex = ( dAng >= 0)
       bOrtho = ( abs( dAng + 90) < 1)
-      ptM = ( ptC[1] + ptC[2]) / 2
+      ptM = ( ptP1 + ptP2) / 2
    else
       bConvex = true
       bOrtho = false
       ptM = ( ptC[1] + ptC[2]) / 2
    end
+   local ptRef = ( ptC[1] + ptC[2]) / 2
    -- analisi del taglio
    local vOrd = {}
    local vFaceUse = {}
    if nSide == 1 then
-      vOrd = EgtIf( ptC[1]:getY() < ptM:getY(), { 1, 2}, { 2, 1})
+      vOrd = EgtIf( ptC[1]:getY() < ptRef:getY(), { 1, 2}, { 2, 1})
       vFaceUse = { BL.GetNearestOrthoOpposite( ptC[1] - ptM), BL.GetNearestOrthoOpposite( ptC[2] - ptM)}
    elseif nSide == -1 then
       vOrd = EgtIf( ptC[1]:getY() < ptM:getY(), { 1, 2}, { 2, 1})