Thanks for the feedback guys.
After reading through all the comments, I have a few responses.
1. Design will be based on the Original Albion Alloys "Strutter" and will work on flattening metal "Brass or Aluminium" tubing with a core of suitably sized wire.
2. Airfoil cross section will be difficult to achieve in all possible scales as that would mean creating 5 or 6 different forms or grooves to accommodate 1/72, 1/48 and 1/32 and allowing for different sized struts in all three scales. Also, the forms or grooves would need to be polished to allow correct alignment of the strut material in the groove and ensure that machining marks don't throw the strut off centre... I might experiment with this, but I doubt I will go to that sort of effort to sell them.
More soon.
Hugh