diff --git a/Compile.bat b/Compile.bat
index 10126dc..2c9a843 100644
--- a/Compile.bat
+++ b/Compile.bat
@@ -1,30 +1,30 @@
 
-REM Compilazione degli script Wall Egaltech                         2023.09.26
+REM Compilazione degli script Wall Egaltech                         2024.03.24
 REM Per togliere info di debug aggiungere flag -s prima del nome del file di input
 
 REM Compilazione 32 e 64 bit
 
-\EgtProg\Dll32\luac54 -o bin\LuaLibs\WallExec.lua                      LuaLibs\WallExec.lua
-\EgtProg\Dll32\luac54 -o bin\LuaLibs\WallLib.lua                       LuaLibs\WallLib.lua
-\EgtProg\Dll32\luac54 -o bin\LuaLibs\WMachiningLib.lua                 LuaLibs\WMachiningLib.lua
-\EgtProg\Dll32\luac54 -o bin\LuaLibs\WProcessCut.lua                   LuaLibs\WProcessCut.lua
-\EgtProg\Dll32\luac54 -o bin\LuaLibs\WProcessDoubleCut.lua             LuaLibs\WProcessDoubleCut.lua
-\EgtProg\Dll32\luac54 -o bin\LuaLibs\WProcessDrill.lua                 LuaLibs\WProcessDrill.lua
-\EgtProg\Dll32\luac54 -o bin\LuaLibs\WProcessDtMortise.lua             LuaLibs\WProcessDtMortise.lua
-\EgtProg\Dll32\luac54 -o bin\LuaLibs\WFeatureTopology.lua              LuaLibs\WFeatureTopology.lua
-\EgtProg\Dll32\luac54 -o bin\LuaLibs\WProcessFreeContour.lua           LuaLibs\WProcessFreeContour.lua
-\EgtProg\Dll32\luac54 -o bin\LuaLibs\WProcessLapJoint.lua              LuaLibs\WProcessLapJoint.lua
-\EgtProg\Dll32\luac54 -o bin\LuaLibs\WProcessMark.lua                  LuaLibs\WProcessMark.lua
-\EgtProg\Dll32\luac54 -o bin\LuaLibs\WProcessMortise.lua               LuaLibs\WProcessMortise.lua
-\EgtProg\Dll32\luac54 -o bin\LuaLibs\WProcessSawCut.lua                LuaLibs\WProcessSawCut.lua
-\EgtProg\Dll32\luac54 -o bin\LuaLibs\WProcessText.lua                  LuaLibs\WProcessText.lua
-\EgtProg\Dll32\luac54 -o bin\LuaLibs\WProcessVariant.lua               LuaLibs\WProcessVariant.lua
-\EgtProg\Dll32\luac54 -o bin\BatchProcess.lua                          BatchProcess.lua
-\EgtProg\Dll32\luac54 -o bin\BatchProcessNew.lua                       BatchProcessNew.lua
-\EgtProg\Dll32\luac54 -o bin\GetWallData.lua                           GetWallData.lua
-\EgtProg\Dll32\luac54 -o bin\NestFlipAndRotate.lua                     NestFlipAndRotate.lua
-\EgtProg\Dll32\luac54 -o bin\NestProcess.lua                           NestProcess.lua
-\EgtProg\Dll32\luac54 -o bin\Overturn.lua                              Overturn.lua
-\EgtProg\Dll32\luac54 -o bin\Process.lua                               Process.lua
-\EgtProg\Dll32\luac54 -o bin\Rotate.lua                                Rotate.lua
-\EgtProg\Dll32\luac54 -o bin\Version.lua                               Version.lua
+\EgtProg\Dll32\luac54 -o bin\LuaLibs\WallExec.lua                   -s LuaLibs\WallExec.lua
+\EgtProg\Dll32\luac54 -o bin\LuaLibs\WallLib.lua                    -s LuaLibs\WallLib.lua
+\EgtProg\Dll32\luac54 -o bin\LuaLibs\WMachiningLib.lua              -s LuaLibs\WMachiningLib.lua
+\EgtProg\Dll32\luac54 -o bin\LuaLibs\WProcessCut.lua                -s LuaLibs\WProcessCut.lua
+\EgtProg\Dll32\luac54 -o bin\LuaLibs\WProcessDoubleCut.lua          -s LuaLibs\WProcessDoubleCut.lua
+\EgtProg\Dll32\luac54 -o bin\LuaLibs\WProcessDrill.lua              -s LuaLibs\WProcessDrill.lua
+\EgtProg\Dll32\luac54 -o bin\LuaLibs\WProcessDtMortise.lua          -s LuaLibs\WProcessDtMortise.lua
+\EgtProg\Dll32\luac54 -o bin\LuaLibs\WFeatureTopology.lua           -s LuaLibs\WFeatureTopology.lua
+\EgtProg\Dll32\luac54 -o bin\LuaLibs\WProcessFreeContour.lua        -s LuaLibs\WProcessFreeContour.lua
+\EgtProg\Dll32\luac54 -o bin\LuaLibs\WProcessLapJoint.lua           -s LuaLibs\WProcessLapJoint.lua
+\EgtProg\Dll32\luac54 -o bin\LuaLibs\WProcessMark.lua               -s LuaLibs\WProcessMark.lua
+\EgtProg\Dll32\luac54 -o bin\LuaLibs\WProcessMortise.lua            -s LuaLibs\WProcessMortise.lua
+\EgtProg\Dll32\luac54 -o bin\LuaLibs\WProcessSawCut.lua             -s LuaLibs\WProcessSawCut.lua
+\EgtProg\Dll32\luac54 -o bin\LuaLibs\WProcessText.lua               -s LuaLibs\WProcessText.lua
+\EgtProg\Dll32\luac54 -o bin\LuaLibs\WProcessVariant.lua            -s LuaLibs\WProcessVariant.lua
+\EgtProg\Dll32\luac54 -o bin\BatchProcess.lua                       -s BatchProcess.lua
+\EgtProg\Dll32\luac54 -o bin\BatchProcessNew.lua                    -s BatchProcessNew.lua
+\EgtProg\Dll32\luac54 -o bin\GetWallData.lua                        -s GetWallData.lua
+\EgtProg\Dll32\luac54 -o bin\NestFlipAndRotate.lua                  -s NestFlipAndRotate.lua
+\EgtProg\Dll32\luac54 -o bin\NestProcess.lua                        -s NestProcess.lua
+\EgtProg\Dll32\luac54 -o bin\Overturn.lua                           -s Overturn.lua
+\EgtProg\Dll32\luac54 -o bin\Process.lua                            -s Process.lua
+\EgtProg\Dll32\luac54 -o bin\Rotate.lua                             -s Rotate.lua
+\EgtProg\Dll32\luac54 -o bin\Version.lua                            -s Version.lua
diff --git a/LuaLibs/WProcessFreeContour.lua b/LuaLibs/WProcessFreeContour.lua
index 10d2512..48e92b6 100644
--- a/LuaLibs/WProcessFreeContour.lua
+++ b/LuaLibs/WProcessFreeContour.lua
@@ -1,4 +1,4 @@
--- ProcessFreeContour.lua by Egaltech s.r.l. 2023/10/02
+-- ProcessFreeContour.lua by Egaltech s.r.l. 2024/03/24
 -- Gestione calcolo profilo libero per Pareti
 -- 2021/11/15 Penna e chiodature sono sempre riportate sulla faccia sopra anche se nel progetto sono sotto.
 -- 2021/12/10 In taglio con lama aggiunta gestione SCC per testa Gearbox.
@@ -28,6 +28,7 @@
 -- 2023/11/14 Spostamento di alcune funzioni in WallLib.
 --            Aggiunta dei FreeContour in doppio.
 -- 2023/12/13 In MakeByPocket aggiunta la possibilità di svuotare tasche passanti.
+-- 2024/03/24 Sostituite funzioni di Collision Detection (EgtCDe*) con quelle di verifica interferenza (EgtTest*).
 
 -- Tabella per definizione modulo
 local WPF = {}
@@ -699,18 +700,17 @@ end
 ---------------------------------------------------------------------
 local function CalcInterference( nNewProc, vtExtr, ptCentr, dDiam1, dDiam2,
                                  dTall1, dTall2, dDiam3, dTall3)
-
    local ptCentrGrid1 = ptCentr + ( vtExtr * 0.01)
    local frOriTool = Frame3d( ptCentrGrid1, vtExtr)
-   local bColl1 = EgtCDeConeSolid( frOriTool, dDiam1/2, dDiam2/2, dTall1, nNewProc, 0, GDB_RT.GLOB)
+   local bColl1 = EgtTestConeSurface( frOriTool, dDiam1/2, dDiam2/2, dTall1, nNewProc, 0, GDB_RT.GLOB)
    if bColl1 then return true end
    local ptCentrGrid2 = ptCentr + ( vtExtr * ( dTall1 + 0.01))
    frOriTool = Frame3d( ptCentrGrid2, vtExtr)
-   local bColl2 = EgtCDeCylSolid( frOriTool, dDiam2/2, (dTall2-dTall1), nNewProc, 0, GDB_RT.GLOB)
+   local bColl2 = EgtTestCylSurface( frOriTool, dDiam2/2, (dTall2-dTall1), nNewProc, 0, GDB_RT.GLOB)
    if bColl2 then return true end
    local ptCentrGrid3 = ptCentr + ( vtExtr * ( dTall2 + 0.01))
    frOriTool = Frame3d( ptCentrGrid3, vtExtr)
-   local bColl3 = EgtCDeCylSolid( frOriTool, dDiam3/2, (dTall3-dTall2), nNewProc, 0, GDB_RT.GLOB)
+   local bColl3 = EgtTestCylSurface( frOriTool, dDiam3/2, (dTall3-dTall2), nNewProc, 0, GDB_RT.GLOB)
    if bColl3 then return true end
    -- restituisco risultato controllo collisioni
    return false
diff --git a/Version.lua b/Version.lua
index f77eb18..56ed435 100644
--- a/Version.lua
+++ b/Version.lua
@@ -1,6 +1,6 @@
--- Version.lua by Egalware s.r.l. 2024/02/20
+-- Version.lua by Egalware s.r.l. 2024/03/24
 -- Gestione della versione di Wall
 
 NAME = 'Wall'
-VERSION = '2.6b2'
-MIN_EXE = '2.5b3'
+VERSION = '2.6c2'
+MIN_EXE = '2.6c2'