Plenty of piano wire on ebay if thats what you need:

**LINK**

Also depends on length and purpose. A 21g syringe needle is 0.83mm rustproof but hollow up to 38mm long.

S/s Kirschner wires available 0.8mm too (see ebay or a local vet that does real surgery)

pgk

You could try M Machine in Darlington, they do mail order

The only straight material I could find in their catalogue was silver steel of 1/32 inch diameter which is only 0.006 mm below 0.8 mm. Piano wire is sold in i metre lengths but comes coiled. Not however available in SWG 21

They sell the silver steel in 13 inch lengths but it may be available elsewhere in a greater length, which might be more convenient for you.

http://www.m-machine-metals.co.uk Phone 01325 381300

Regards Brian

Piano wire supplied in model shops was in 36" (914.4mm) lengths. This was before T'nternet and instant gratification (Pre Covid) killed most of them off.

Regards Ian.

PS. Bunging a few amps (Low Voltage) through a wire held in tension will "Set" it straight. Have been using Pirrana wire in a string tensioned frame for hot wire cutting Aero wings for years.

Edited By Circlip on 27/08/2020 13:16:44

What are you doing with it? Piano or music wire is not easy to work being hardened.

If you want anything that thin to arrive straight then don't be surprised when the packing cost if more than the few pence that the material costs, a Cardboard tube or length of batten to tape it to are going to cost the supplier