Length depends on your ear but they're usually 16ga or 14ga
Depend
14g is the thinnest barbell for and industrial, anything else is subject to bending and can hold a tear hazard due to the thin nature of the metal.
No, tongue rings are specifically designed for tongue piercings and are not suitable for an industrial piercing. An industrial piercing typically requires a long straight barbell that goes through two separate ear piercings. It is best to use jewelry that is specifically designed for an industrial piercing to ensure proper healing and comfort.
No Industrials are pierced at 12g for a 14g barbell.
If you are asking just about the barbell in say an industrial piercing, they can range from $35.00 to $65.00 depending on the material and quality of the barbell.
An industrial barbells is used for many things. The biggest thing that industrial barbells are used for would be as piercing in a human body such as an ear.
depends on the gauge of the studs
Yes you can but it's good to gauge up to the size of the barbell you want to use. They usually aren't more than 2 sizes up from the small piercings.
Yes, and that is actually the smart way to do it. If a piercer does it with a barbell and happens to put one on that is too short, and doesnt allow room for swelling, it will cause you to develop an "elf ear", which is caused by the barbell not allowing room for your ear to grow and swell. Once it heals, you can go back to your piercer and ask him to fit you with an Industrial barbell that fits your ear size.
If we are talking about an industrial piercing, yes you need two piercings. however you can still wear a barbell in one piercing provided that it is fitted to work in that single piercing.
I'll give you the link for BAF and you can look through their photo gallery.
Industrial piercings don't have backs, it's one long barbell running through two diffrent piercings in the ear cartilage.