Thanks for your comments. I cannot use ali foils as I have to silver solder into an H section before final shaping and drilling and polish. On a fairly modern sailing yacht (1980) no one makes modeller's components
ToniT. Would like to take you up on your offer. Thickness to be:
0.30mm (0.12in or 30 Imp Wire Guage) or
0.25mm (0.25in or 33 IWG)
Sizes about that of larger (event) postage stamps.