How to build Optima RMC? -- Rebuildable Mesh Coil

The most money-saving coil, you can build it by yourself for fun and saving money, one pack RMC cotton and RMC mesh wire, you can build it 10 times, just like 10 coils, but just cost around 30% of the normal 10 coils.
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More details about Optima here: https://www.vapefly.com/vapefly-Optim...
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