We start by shaping up the wire.
Print and stick to a surface the design of your antenna
Cut a 8m piece of Galvanize Steel wire 2mm thick.
Using a cylinder slightly smaller than the radius of the helix (in our case 130mm) start wrapping the steel wire around it. Repeat multiple times, till it starts to approximate the needed diameter.
You should end up with a nice spring-like piece of steel wire.
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