diff --git a/LuaLibs/DiceCut.lua b/LuaLibs/DiceCut.lua
index 911abb2..d07cfff 100644
--- a/LuaLibs/DiceCut.lua
+++ b/LuaLibs/DiceCut.lua
@@ -1,4 +1,4 @@
--- DiceCut.lua by Egaltech s.r.l. 2023/01/09
+-- DiceCut.lua by Egaltech s.r.l. 2023/02/05
 -- Gestione dei piano paralleli nei tagli lunghi: equidistanziamento dei piani paralleli
 
 -- Tabella per definizione modulo
@@ -144,8 +144,8 @@ local function GetOrtoCutCenter( FacetId, ptC, vtN, vtO, dOffsetEff, dNzLimDwnUp
    EgtErase( IdAuxLocal)
    EgtSetGridFrame(Frame3d())
    -- riferimento intrinseco
-   local asseX = vtO
-   local asseY = asseX ^ vtN
+   local asseX = Vector3d( vtO)
+   local asseY = vtN ^ asseX
    local Frame = Frame3d( ptC, ptC + asseX, ptC + asseY)
    -- ingombro della faccia secondo questo riferimento
    local Box = EgtGetBBoxRef( FacetId, GDB_BB.STANDARD, Frame)
@@ -160,12 +160,11 @@ local function GetOrtoCutCenter( FacetId, ptC, vtN, vtO, dOffsetEff, dNzLimDwnUp
    end
 
    local N = ceil( dLen / dOffsetEff)
-   local dOffsetRel = dLen / N 
+   local dOffsetRel = ( dLen / N) + 10 * GEO.EPS_SMALL
    local dCopyPlane
    local dCenOffs = ( Box:getMax():getX() + Box:getMin():getX()) / 2
 
    if dLen <= dOffsetRel then
-      --dOffsetRel = 0
       dCopyPlane = 1
    elseif dLen <= 2 * dOffsetRel then
       dOffsetRel = dOffsetEff
@@ -177,8 +176,7 @@ local function GetOrtoCutCenter( FacetId, ptC, vtN, vtO, dOffsetEff, dNzLimDwnUp
          dCopyPlane = 0.5
       end
    end
-      
-   
+
    return dOffsetRel, dCopyPlane, dCenOffs, ptS
 end
 
diff --git a/LuaLibs/FacesBySaw.lua b/LuaLibs/FacesBySaw.lua
index ab3d144..60b35c6 100644
--- a/LuaLibs/FacesBySaw.lua
+++ b/LuaLibs/FacesBySaw.lua
@@ -141,8 +141,8 @@ function FacesBySaw.MakeOne( nSurfId, nFacet, sCutting, dSawDiam, Par5, dVzLimDw
       ( not bDownHead or abs( vtTg:getZ()) < 0.51) and
       abs( vtTg:getX()) < 0.9848 and
       ( ( abs( vtTg:getZ()) < 0.17 and ( vtV1:getZ() < -0.5 or vtV2:getZ() < -0.5) and not bDownHead) or
-        ( abs( vtTg:getZ()) < 0.51 and b3Box:getDimZ() > 300 and BD.C_SIMM and BD.MAX_HEIGHT > 450) or 
-        ( Ktp * dLenLi2 < dLenLi and Ktp * dLenLo2 < dLenLo) or Ktp * ( dLenLi2 + dLenLo2) < ( dLenLi + dLenLo)) then
+        ( abs( vtTg:getZ()) < 0.51 and b3Box:getDimZ() > 300 and BD.C_SIMM and BD.MAX_HEIGHT > 450 and b3Box:getDimX() > BD.LEN_SHORT_PART) or 
+        ( abs( vtTg:getZ()) < 0.51 and ( dLenLi2 + dLenLo2) < ( dLenLi + dLenLo)) or Ktp * ( dLenLi2 + dLenLo2) < ( dLenLi + dLenLo)) then
       dLiTang, dLiPerp, dLoTang, dLoPerp = dLi2Tang, dLi2Perp, dLo2Tang, dLo2Perp
       if BD.TURN then
          bTurnTang = true