While I agree wires can be considered a resource if making a thatched roof or some such, I think rare wires should be considered a tool-head when making a metal brush (you already need to make 2 and combine for the weight requirement), so it would make a lot of sense for this to make a rare brush. Hopefully this is an oversight/bug and not intended.
TLDR: making a rare brush should be like making other rare tools, wires should be considered a tool-head.
(seems I posted this in WU first oops, here seems a better choice)
