Copper wire 0.5mm diameter

• Manufacturer: Various
• Product ID: Various

This is used to make a very short electrical joint between components, such as the two tact switches in the Spitfire MkIX fire button.

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Indicative Pricing With Allowance for P&P

eBay is cheapest for small quantities. The best I saw was £1.40

£1.40

Substitutions

You could try stripping the insulation off some solid core insulated wire. It needs to be very small diameter so it fits inside a ferrule along with the leg of a component. Squashing it flatter with pliers helps.