diff --git a/LuaLibs/BeamExec.lua b/LuaLibs/BeamExec.lua
index 9f1de4f..5a82940 100644
--- a/LuaLibs/BeamExec.lua
+++ b/LuaLibs/BeamExec.lua
@@ -376,12 +376,12 @@ function BeamExec.ProcessBeams( dRawW, dRawH, dRawL, dOvmHead, dOvmMid, PARTS)
    for i = 1, #PARTS do
       -- dati del pezzo
       local b3BoxExact = EgtGetBBoxGlob( PARTS[i].id or GDB_ID.NULL, GDB_BB.EXACT)
-      if b3BoxExact:isEmpty() or PARTS[i].b3Part:isEmpty() then break end
+      if b3BoxExact:isEmpty() or PARTS[i].b3PartOriginal:isEmpty() then break end
       EgtOutLog( 'PartSez=' .. EgtNumToString( b3BoxExact:getDimY(), 1) .. 'x' .. EgtNumToString( b3BoxExact:getDimZ(), 1), 3)
       -- se sezione compatibile e lunghezza disponibile sufficiente
-      local dPartLen = PARTS[i].b3Part:getDimX()
-      local dPartWidth = PARTS[i].b3Part:getDimY()
-      local dPartHeight = PARTS[i].b3Part:getDimZ()
+      local dPartLen = PARTS[i].b3PartOriginal:getDimX()
+      local dPartWidth = PARTS[i].b3PartOriginal:getDimY()
+      local dPartHeight = PARTS[i].b3PartOriginal:getDimZ()
       local dNextLen = dLen - EgtIf( i == 1, dDeltaS, 0) - dPartLen - dDeltaE
       if (( abs( dPartWidth - dRawW) < 100 * GEO.EPS_SMALL  and  abs( dPartHeight - dRawH) < 100 * GEO.EPS_SMALL)  or
           ( abs( dPartHeight - dRawW) < 100 * GEO.EPS_SMALL  and  abs( dPartWidth - dRawH) < 100 * GEO.EPS_SMALL))  and
@@ -411,7 +411,7 @@ function BeamExec.ProcessBeams( dRawW, dRawH, dRawL, dOvmHead, dOvmMid, PARTS)
             return false, sOut
          end
          -- aggiungo faccia per taglio iniziale al pezzo
-         BeamLib.AddPartStartFace( PARTS[i].id, PARTS[i].b3Part)
+         BeamLib.AddPartStartFace( PARTS[i].id, PARTS[i].b3PartOriginal)
          -- se sovramateriale di testa, lo notifico
          if dDeltaS > 0.09 then
             EgtSetInfo( PARTS[i].idRaw, 'HOVM', dDeltaS)
@@ -423,16 +423,16 @@ function BeamExec.ProcessBeams( dRawW, dRawH, dRawL, dOvmHead, dOvmMid, PARTS)
             EgtSetInfo( PARTS[i].idRaw, 'TOVM', dDeltaE)
          end
          -- aggiungo faccia per taglio finale al pezzo
-         BeamLib.AddPartEndFace( PARTS[i].id, PARTS[i].b3Part)
+         BeamLib.AddPartEndFace( PARTS[i].id, PARTS[i].b3PartOriginal)
          -- inserisco il pezzo nel grezzo
          EgtDeselectPartObjs( PARTS[i].id)
-         local ptPos = b3BoxExact:getMin() - PARTS[i].b3Part:getMin() + Vector3d( dDelta, ( dRawW - dPartWidth) / 2, ( dRawH - dPartHeight) / 2)
+         local ptPos = b3BoxExact:getMin() - PARTS[i].b3PartOriginal:getMin() + Vector3d( dDelta, ( dRawW - dPartWidth) / 2, ( dRawH - dPartHeight) / 2)
          EgtAddPartToRawPart( PARTS[i].id, ptPos, PARTS[i].idRaw)
          if abs( dPartWidth - dRawW) > 100 * GEO.EPS_SMALL then
             -- rotazione attorno a centro geometria complessiva del pezzo
             EgtRotatePartInRawPart( PARTS[i].id, X_AX(), 90)
             -- correggo per eccentricità solido rispetto a geometria complessiva del pezzo
-            local vtEccOri = PARTS[i].b3Part:getCenter() - b3BoxExact:getCenter()
+            local vtEccOri = PARTS[i].b3PartOriginal:getCenter() - b3BoxExact:getCenter()
             local vtEccRot = Vector3d( vtEccOri)
             vtEccRot:rotate( X_AX(), 90)
             EgtMovePartInRawPart( PARTS[i].id, ( vtEccOri - vtEccRot))
@@ -450,6 +450,7 @@ function BeamExec.ProcessBeams( dRawW, dRawH, dRawL, dOvmHead, dOvmMid, PARTS)
          PARTS[i].dWidth = PARTS[i].b3Raw:getDimY()
          PARTS[i].dHeight = PARTS[i].b3Raw:getDimZ()
          PARTS[i].bSquareSection = abs( PARTS[i].dWidth - PARTS[i].dHeight) < 100 * GEO.EPS_SMALL
+         PARTS[i].b3Part = EgtGetBBoxGlob( EgtGetFirstNameInGroup( PARTS[i].id, 'Box') or GDB_ID.NULL, GDB_BB.STANDARD)
          PARTS[i].nIndexInParts = i
          PARTS[i].CombinationList = GetAvailableCombinations( PARTS[i])
          PARTS[i].SplittingPoints = BeamLib.GetPartSplittingPoints( PARTS[i])
diff --git a/Process.lua b/Process.lua
index 071ebc6..310c05b 100644
--- a/Process.lua
+++ b/Process.lua
@@ -131,15 +131,15 @@ local function MyProcessInputData()
          EgtOutBox( 'Box non definito per la trave ' .. PARTS[i].sName, 'Lavora Travi', 'ERROR')
          return false
       else
-         PARTS[i].b3Part = b3Solid
+         PARTS[i].b3PartOriginal = b3Solid
       end
    end
-   dRawW = PARTS[1].b3Part:getDimY()
-   dRawH = PARTS[1].b3Part:getDimZ()
+   dRawW = PARTS[1].b3PartOriginal:getDimY()
+   dRawH = PARTS[1].b3PartOriginal:getDimZ()
    local vBeamErr = {}
    for i = 2, #PARTS do
-      local dDimW = PARTS[i].b3Part:getDimY()
-      local dDimH = PARTS[i].b3Part:getDimZ()
+      local dDimW = PARTS[i].b3PartOriginal:getDimY()
+      local dDimH = PARTS[i].b3PartOriginal:getDimZ()
       if ( abs( dDimW - dRawW) > 10 * GEO.EPS_SMALL  or  abs( dDimH - dRawH) > 10 * GEO.EPS_SMALL)  and
          ( abs( dDimH - dRawW) > 10 * GEO.EPS_SMALL  or  abs( dDimW - dRawH) > 10 * GEO.EPS_SMALL) then
          table.insert( vBeamErr, i)
@@ -186,9 +186,9 @@ local function MyProcessBeams()
    -- Lunghezza totale delle travi
    local dTotLen = 0
    for i = 1, #PARTS - 1 do
-      dTotLen = dTotLen + PARTS[i].b3Part:getDimX()
+      dTotLen = dTotLen + PARTS[i].b3PartOriginal:getDimX()
    end
-   dTotLen = dTotLen + max( PARTS[#PARTS].b3Part:getDimX(), BeamData.dMinRaw)
+   dTotLen = dTotLen + max( PARTS[#PARTS].b3PartOriginal:getDimX(), BeamData.dMinRaw)
    local dAddLen = BeamData.OVM_HEAD + ( #PARTS - 1) * BeamData.OVM_MID
    EgtOutLog( 'Ltot : '..EgtNumToString( dTotLen, 1) .. ' Lagg : '..EgtNumToString( dAddLen, 1)..' MinUnloadRaw : '.. EgtNumToString( BeamData.dMinRaw + BeamData.OVM_MID, 1), 1)
 
@@ -277,10 +277,10 @@ local function MyProcessBeams()
    local bOrd = ( vsVal[5] == 'true')
    if bOrd then
       table.sort( PARTS, function( B1, B2)
-                           if abs( B1.b3Part:getDimX() - B2.b3Part:getDimX()) < 1 then
+                           if abs( B1.b3PartOriginal:getDimX() - B2.b3PartOriginal:getDimX()) < 1 then
                               return B1.nInd < B2.nInd
                            else
-                              return B1.b3Part:getDimX() < B2.b3Part:getDimX()
+                              return B1.b3PartOriginal:getDimX() < B2.b3PartOriginal:getDimX()
                            end
                         end)
    end