diff --git a/StrategyLibs/BLADETOWASTE.lua b/StrategyLibs/BLADETOWASTE.lua
index 287444b..a44dae3 100644
--- a/StrategyLibs/BLADETOWASTE.lua
+++ b/StrategyLibs/BLADETOWASTE.lua
@@ -797,6 +797,10 @@ 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
@@ -877,6 +881,15 @@ local function CalculateDiceMachinings( vCuts, Parameters)
                   bMoveAfterSplit = true
                end
             end
+
+         -- aggiornamento grezzo dinamico
+         -- TODO
+         if ( i >= 3) and ( i % 2) > 0 then
+            local idMergedParallelCutsSurf = EgtSurfTmBySewing( nAddGrpId, vCuts[i], false)
+            idCheckCollisionTm = nil
+            
+         end
+
          else
             EgtErase( nSurfToCut)
             bIsDicingOk = false
@@ -936,6 +949,15 @@ local function CalculateDiceMachinings( vCuts, Parameters)
             if Cutting.sStage == 'AfterTail' then
                bMoveAfterSplit = true
             end
+
+            -- aggiornamento grezzo dinamico
+            -- TODO
+            if ( i >= 3) and ( i % 2) > 0 then
+               local nAddGrpId = BeamLib.GetAddGroup( Part.id)
+               local idMergedParallelCutsSurf = EgtSurfTmBySewing( nAddGrpId, vCuts[i], false)
+               idCheckCollisionTm = nil
+               
+            end
          end
       end
    end