Many Thanks to all who have replied to this topic, you have given me MUCH food for thought!
BTW, I have made the side-rods for the 'Project' using Starrett 0-1 oil hardining ground flat stock. Even though this material has been "fully spheroidized annealed" it still warped a fair amount. I just bent them back straight and all is well again :-) Kindest Regards, PeteH