KR> Aileron counterbalances

[Peter Drake]

I am in the process of building the ailerons. I can,t see from the plans what 
size or type of material they are made from except that they should be 1/8" 
thick.
There were some posts a couple of years back about it, suggesting steel would 
be best, what size and thickness? Should I  use angle rather than bending some 
plate up?
Thanks
Peter Drake UK