Kiriba-ru might be the one to ask about that. Its not copper but he seems to do quite a few other custom parts.
S2+ and S21a spacers are available in EU. You can get them directly from BLF member Chatika vas Paus: https://budgetlightforum.com/messages/new/24803?destination=user/24803 The following parts are available in United States. You can get them directly from BLF member containerfan: https://budgetlightforum.com/messages/new/39321?destination=user/39321 Aluminum spacer for quad S11 - $10, 30g. in stock [image] Copper spacer for quad S11 - $15, 90g. in stock [image] Carclo 10621 24mm quad N…
Hank might even do it if he had enough request.