diff --git a/LuaLibs/MachiningLib.lua b/LuaLibs/MachiningLib.lua
index 02cbcc0..deb655b 100644
--- a/LuaLibs/MachiningLib.lua
+++ b/LuaLibs/MachiningLib.lua
@@ -1031,14 +1031,18 @@ function MachiningLib.AddOperations( vProc, Part, sRotation)
                   local idDisp = EgtGetPhaseDisposition( nPhase)
 
                   if sRotation == 'DOWN' then
-                     BeamLib.RotateRawPart( Part, 2)
+                     local nRotation = EgtIf( Part.nInitialPosition + 2 > 4, Part.nInitialPosition + 2 - 4, Part.nInitialPosition + 2) - 1
+                     BeamLib.RotateRawPart( Part, nRotation)
                      EgtSetInfo( idDisp, 'ROT', -2)
                      EgtSetInfo( idDisp, 'TYPE', 'MID2')
                   elseif sRotation == 'SIDE' then
-                     BeamLib.RotateRawPart( Part, 1)
+                     local nRotation = EgtIf( Part.nInitialPosition + 1 > 4, Part.nInitialPosition + 1 - 4, Part.nInitialPosition + 1) - 1
+                     BeamLib.RotateRawPart( Part, nRotation)
                      EgtSetInfo( idDisp, 'ROT', -1)
                      EgtSetInfo( idDisp, 'TYPE', 'MID2')
                   else
+                     local nRotation = Part.nInitialPosition - 1
+                     BeamLib.RotateRawPart( Part, nRotation)
                      EgtSetInfo( idDisp, 'TYPE', 'END')
                   end
                   EgtSetInfo( idDisp, 'ORD', MACHININGS[i].Proc.nIndexPartInParts)