Where to get unusual size spokes

[plantfit]

I am currently restoring a 1870's penney farthing junior but need some spokes, the original ones are 407mm long and 3mm diameter (or imperial equivalent) the threads go for 2cm and these screw into the brass hub,the other end is a standard dome/mushroom head,what I want to do is cut threads on both ends and use spoke nipples to tension them, does anyone know where I can get some spoke wire/3mm high tensile rod from? I would be grateful for any help on this, Thanks for taking the time to read this unusual request

 

[Tim Hall]

Joff Summerfield builds penny farthings (or used to). He's on Twitter, so you could ask him for some pointers.

 

[plantfit]

Thanks Tim

 

[chriscross1966]

Silver steel is properly tough when unhardened. https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.co.uk/ulk/itm/270693447272

 

[plantfit]

Thanks chriscross,looking into that one