diff --git a/LuaLibs/ProcessRidgeLap.lua b/LuaLibs/ProcessRidgeLap.lua
index dbfc145..39d5640 100644
--- a/LuaLibs/ProcessRidgeLap.lua
+++ b/LuaLibs/ProcessRidgeLap.lua
@@ -176,15 +176,15 @@ function ProcessRidgeLap.Make( Proc, nPhase, nRawId, nPartId, dOvmHead)
       local vtRef2 = Vector3d( vtN[vFaceOrd[2]])
       -- eseguo
       for i = 1, #vCuts do
-         local nOrthoOpposite
+         local vtOrtho
          if i % 2 == 1 then
-            nOrthoOpposite = BL.GetNearestOrthoOpposite( vtRef)
+            vtOrtho = vtRef
          else
-            nOrthoOpposite = BL.GetNearestOrthoOpposite( vtRef2)
+            vtOrtho = vtRef2
          end
          -- lavoro la faccia
          for j = 1, #vCuts[i] do
-            local bOk, sErr = Fbs.MakeOne( vCuts[i][j], 0, sCutting, dSawDiam, nOrthoOpposite, dVzLimDwnUp, 0, BD.CUT_SIC, 0, 0, 0, nil, b3Raw)
+            local bOk, sErr = Fbs.MakeOne( vCuts[i][j], 0, sCutting, dSawDiam, vtOrtho, dVzLimDwnUp, 0, BD.CUT_SIC, 0, 0, 0, nil, b3Raw)
             if not bOk then
                return bOk, sErr
             end