Can copper wire become coil vape?

No, you should absolutely not use copper wire for vaping coils. It's extremely dangerous and poses serious health risks. Here's why:

Toxic Fumes When Heated: Copper oxidizes when heated. Inhaling copper oxide fumes can cause "Metal Fume Fever" (symptoms like fever, chills, nausea, headache, muscle aches) and potentially lead to severe lung damage or long-term respiratory problems with repeated exposure.

Lower Melting Point: Copper melts at a much lower temperature (around 1085°C / 1981°F) compared to vaping coil alloys like Kanthal, Nichrome, or Stainless Steel (which melt well above typical vaping temperatures). A copper coil could easily melt during dry burning or even normal use at higher wattages, causing a short circuit, damaging your device, and potentially releasing large amounts of toxic fumes.

Rapid Oxidation and Degradation: Copper oxidizes (turns black/green) very quickly at vaping temperatures. This oxide layer is brittle and can flake off. Inhaling these particles is dangerous.

Electrical Resistance: Copper has very low electrical resistance. This would cause several problems:

Your mod might not fire it at all (resistance too low).

If it does fire, it would require an extremely high current to heat up, potentially overstressing your battery, leading to overheating, venting, or even explosion.

It would heat up and cool down too quickly, making for a very poor and potentially dangerous vaping experience.

Poor Wicking Properties: The surface properties of oxidized copper are not suitable for the capillary action needed to effectively wick e-liquid to the coil's hot spots.

Bad Taste: Copper would impart a strong, unpleasant metallic taste to the vapor.

Safe Alternatives for Vaping Coils:

Kanthal (FeCrAl): The most common, affordable, easy to work with, good resistance range.

Nichrome (Ni80, Ni90): Heats up faster than Kanthal, lower resistance.

Stainless Steel (SS316L, SS304): Can be used in both Wattage and Temperature Control modes, clean flavor.

Nickel (Ni200): Only for Temperature Control mode. Never use in Wattage mode.

Titanium (Ti): Only for Temperature Control mode. Never use in Wattage mode. Requires careful handling to avoid dry burns which create harmful TiO2.

Conclusion:

Using copper wire for a vape coil is not safe under any circumstances. The risk of inhaling toxic copper oxide fumes and the potential for battery failure far outweigh any perceived benefit. Always use wire specifically designed and manufactured for vaping purposes (Kanthal, Nichrome, Stainless Steel, Ni200, Ti - used correctly). Your health and safety are not worth the risk.