diff --git a/StrategyLibs/BLADETOWASTE.lua b/StrategyLibs/BLADETOWASTE.lua
index 750d6d3..9bbb30d 100644
--- a/StrategyLibs/BLADETOWASTE.lua
+++ b/StrategyLibs/BLADETOWASTE.lua
@@ -782,6 +782,46 @@ local function CutWholeWaste( Proc, Part, OptionalParameters)
 end
 
 
+local function UpdateDiceRaw( idRaw, idParallelTm, idPerpendicularTm, Part, MainFace, OtherFace)
+
+   -- frame solidale alla feature
+   local vtZ = MainFace.vtN
+   local vtX = OtherFace and OtherFace.vtN or nil
+   local frMainFace = Frame3d( MainFace.ptCenter, vtZ, vtX)
+
+   -- box del cubetto in riferimento feature
+   local b3Surf = EgtGetBBoxRef( idParallelTm, GDB_BB.STANDARD, frMainFace)
+   local b3SurfPerpendicular = EgtGetBBoxRef( idPerpendicularTm, GDB_BB.STANDARD, frMainFace)
+   b3Surf:Add( b3SurfPerpendicular)
+
+   -- estensione box per non avere problemi nella sottrazione booleana
+   if OtherFace then
+      local vtY = vtZ ^ vtX
+      local ptDeltaX = b3Surf:getMax() + vtX * 1
+      local ptDeltaZ = b3Surf:getMax() + vtZ * 1
+      local ptDeltaYplus = b3Surf:getMax() + vtY * 1
+      local ptDeltaYminus = b3Surf:getMin() - vtY * 1
+      b3Surf:Add( ptDeltaX)
+      b3Surf:Add( ptDeltaZ)
+      b3Surf:Add( ptDeltaYplus)
+      b3Surf:Add( ptDeltaYminus)
+   else
+      b3Surf:expand( 1)
+   end
+   
+   -- si porta il box in riferimento globale 
+   b3Surf:toGlob( frMainFace)
+
+   -- conversione box cubetto in superficie
+   local idSurfTmToSubtract = EgtSurfTmBBox( Part.idTempGroup, b3Surf, false, GDB_RT.GLOB)
+
+   -- sottrazione del cubetto dal grezzo
+   EgtSurfTmSubtract( idRaw, idSurfTmToSubtract)
+
+   return idRaw
+end
+
+
 local function CalculateDiceMachinings( vCuts, Parameters)
    local Machinings = {}
    local bMoveAfterSplit = false
@@ -789,6 +829,7 @@ local function CalculateDiceMachinings( vCuts, Parameters)
    local Proc = Parameters.Proc
    local Part = Parameters.Part
    local MainFace = Parameters.MainFace
+   local OtherFace = next( Parameters.OtherFace) and Parameters.OtherFace or nil
    local Tool = Parameters.Tool
    local sChosenBladeType = Parameters.sChosenBladeType
    local dExtendAfterTail = Parameters.dExtendAfterTail
@@ -797,21 +838,15 @@ local function CalculateDiceMachinings( vCuts, Parameters)
    local bCannotSplitRestLength = Parameters.bCannotSplitRestLength
    local bReduceDiceDepth = Parameters.bReduceDiceDepth
 
+   -- trimesh con RestLength
+   local b3CheckCollision = BeamLib.GetPartBoxWithHeadTail( Part, sRestLengthSideForPreSimulation)
+   local idCheckCollisionTm = EgtSurfTmBBox( Part.idTempGroup, b3CheckCollision, false, GDB_RT.GLOB)
+
    -- eventuale inversione tagli ortogonali e aggiunta informazioni alla geometria
    local bAreOrthogonalCutsInverted = false
    for i = 1, #vCuts do
       for j = 1, #vCuts[i] do
          SetDiceFaceInfo( Proc, vCuts[i][j])
-         -- TODO vedere se questa parte serve ancora; in teoria no perchè il taglio è girato automaticamente nella FaceByBlade
-         -- if ( i % 2) == 1 then
-         --    local vtO = EgtSurfTmFacetNormVersor( vCuts[i][j], 0, GDB_ID.ROOT)
-         --    if MachiningLib.IsFaceZOutOfRange( vtO, Tool) then
-         --       EgtInvertSurf( vCuts[i][j])
-         --       local vtCurrentFaceNormal = EgtSurfTmFacetNormVersor( vCuts[i][j], 0, GDB_ID.ROOT)
-         --       EgtMove( vCuts[i][j], -vtCurrentFaceNormal * Tool.dThickness, GDB_RT.GLOB)
-         --       bAreOrthogonalCutsInverted = true
-         --    end
-         -- end
       end
    end
    -- calcolo lavorazioni
@@ -857,8 +892,8 @@ local function CalculateDiceMachinings( vCuts, Parameters)
       local bIsDicingOk = true
       if bCanMergeParallelCuts then
          local nAddGrpId = BeamLib.GetAddGroup( Part.id)
-         local nSurfToCut = EgtSurfTmBySewing( nAddGrpId, vCuts[i], false)
-         local ProcTrimesh = FeatureLib.GetProcFromTrimesh( nSurfToCut, Part)
+         local idSurfToCut = EgtSurfTmBySewing( nAddGrpId, vCuts[i], false)
+         local ProcTrimesh = FeatureLib.GetProcFromTrimesh( idSurfToCut, Part)
 
          local OptionalParametersCutWholeWaste = {
             nToolIndex = Tool.nIndex,
@@ -877,8 +912,12 @@ local function CalculateDiceMachinings( vCuts, Parameters)
                   bMoveAfterSplit = true
                end
             end
+            -- aggiornamento grezzo dinamico
+            if i % 2 == 0 then
+               UpdateDiceRaw( idCheckCollisionTm, idSurfToCut, vCuts[i-1][#vCuts[i-1]], Part, MainFace, OtherFace)
+            end
          else
-            EgtErase( nSurfToCut)
+            EgtErase( idSurfToCut)
             bIsDicingOk = false
          end
       end
@@ -936,6 +975,10 @@ local function CalculateDiceMachinings( vCuts, Parameters)
             if Cutting.sStage == 'AfterTail' then
                bMoveAfterSplit = true
             end
+            -- aggiornamento grezzo dinamico
+            if i % 2 == 0 then
+               UpdateDiceRaw( idCheckCollisionTm, vCuts[i][j], vCuts[i-1][j], Part, MainFace, OtherFace)
+            end
          end
       end
    end
@@ -1013,6 +1056,7 @@ local function CutWithDicing( Proc, Part, OptionalParameters)
       Proc = Proc,
       Part = Part,
       MainFace = Face1,
+      OtherFace = Face2,
       Tool = TOOLS[nToolIndex],
       sChosenBladeType = sChosenBladeType,
       dExtendAfterTail = dExtendAfterTail,