diff --git a/LuaLibs/WProcessLapJoint.lua b/LuaLibs/WProcessLapJoint.lua
index 35c8ef8..c2d86d0 100644
--- a/LuaLibs/WProcessLapJoint.lua
+++ b/LuaLibs/WProcessLapJoint.lua
@@ -115,7 +115,7 @@ function WPL.Classify( Proc, b3Raw)
       vtN[1] = EgtSurfTmFacetNormVersor( Proc.Id, 0, GDB_ID.ROOT)
       vtN[2] = EgtSurfTmFacetNormVersor( Proc.Id, 1, GDB_ID.ROOT)
       -- verifico se è lavorabile da sopra o di fianco
-      return ( vtN[1]:getZ() >= - 0.015 or vtN[2]:getZ() >= - 0.015) 
+      return ( vtN[1]:getZ() >= - 0.028 or vtN[2]:getZ() >= - 0.028) 
    -- se più di 2 facce
    else
       local nFacInd, dElev, nFacInd2, dElev2 = WL.GetFaceWithMostAdj( Proc.Id, Proc.PartId)
@@ -1946,18 +1946,20 @@ local function MakeSideGrooveByMill( Proc, nFacet, nRawId, b3Raw, sCustomMach, d
       EgtSetMachiningParam( MCH_MP.FACEUSE, nFace2ndFace)
       local dMaxElev = dMaxMat
       local dStepOtherFace = 0
+      local dDepthOtherFace = dMaxMat
       if Proc.Fct == 2 and vtN2:getZ() < -0.99 and vtN2:getZ() > -1.01 then
          dStepOtherFace = dStepOri or EgtGetMachiningParam( MCH_MP.STEP)
          if dStepOtherFace < GEO.EPS_SMALL then dStepOtherFace = 0.75 * dMaxMat end
          local nStepOtherFace = ceil( ( dElevOtherFacet - dMaxMat) / dStepOtherFace)
          dStepOtherFace = max( ( dElevOtherFacet - dMaxMat) / max( nStepOtherFace, 1), 0)
          dMaxElev = max( ( nStepOtherFace + 1) * dStepOtherFace - GEO.EPS_SMALL, 0)
+         dDepthOtherFace = dElevOtherFacet
       end
       EgtSetMachiningParam( MCH_MP.STEP, dStepOtherFace)
       EgtSetMachiningParam( MCH_MP.USERNOTES, 'MaxElev=' .. EgtNumToString( dMaxElev, 3) .. ';')
       if bMachFromDn then
          EgtSetMachiningParam( MCH_MP.INVERT, true)
-         EgtSetMachiningParam( MCH_MP.DEPTH, dMaxMat)
+         EgtSetMachiningParam( MCH_MP.DEPTH, dDepthOtherFace)
       else
          EgtSetMachiningParam( MCH_MP.INVERT, false)
       end