Step 3.
Oxidisation.
This step may be skipped, I have added it for contrast.
Take 2 of the lengths, I have used the 1.5mm wire, gently heat with torch (I have my used hand held kitchen type torch as these are more accessible for everyone, but any blow torch will do) until it reaches a dull glow, at this point remove heat. Leave to cool, but do not pickle.
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