diff --git a/LuaLibs/BeamLib.lua b/LuaLibs/BeamLib.lua
index 316f655..9aa5ab1 100644
--- a/LuaLibs/BeamLib.lua
+++ b/LuaLibs/BeamLib.lua
@@ -391,7 +391,7 @@ function BeamLib.Is3EdgesApprox( Proc, idFace, nAddGrpId)
    elseif nEntityCount then
       for i = 1, nEntityCount do
          local dLength = EgtCurveCompoLength( nContourId, i - 1)
-         if dLength < 15 then nEdges = nEdges - 1 end
+         if dLength < 5 then nEdges = nEdges - 1 end
       end
    end
    if nEdges == 3 then bResult = true end
diff --git a/LuaLibs/DiceCut.lua b/LuaLibs/DiceCut.lua
index 1d4f298..137fe07 100644
--- a/LuaLibs/DiceCut.lua
+++ b/LuaLibs/DiceCut.lua
@@ -400,16 +400,16 @@ function DiceCut.GetDice( Part, Face1, Face2, OptionalParameters)
    local ptCMainFace
    local vtNMainFace
    if Face1.ptCenter and Face1.vtN then
-      ptCMainFace = Face1.ptCenter
-      vtNMainFace = Face1.vtN
+      ptCMainFace = Point3d( Face1.ptCenter)
+      vtNMainFace = Vector3d( Face1.vtN)
    end
    -- faccia secondaria; se non esiste, si forza il calcolo dei piani ortogonali
    local ptCSubordinateFace
    local vtNSubordinateFace
    local bGetOrtoPlanes
    if Face2.ptCenter and Face2.vtN then
-      ptCSubordinateFace = Face2.ptCenter
-      vtNSubordinateFace = Face2.vtN
+      ptCSubordinateFace = Point3d( Face2.ptCenter)
+      vtNSubordinateFace = Vector3d( Face2.vtN)
       bGetOrtoPlanes = false
    else
       bGetOrtoPlanes = true