You really should not be reusing needles to tattoo someone. If you are going to though, the only way to properly sterilize them is by using an autoclave. An autoclave uses extreme pressure and heat to kill germs and bacteria.
Tattooing out of the home is illegal mainly because of sanitation risks. If someone is just tattooing out of their home, there's no real way to make sure that they're taking proper health precautions. Tattoo artists in shops are generally required to wear gloves, face masks in some places, sterilize their equipment, dispose of used needles in special bio-hazard containers, sterilize any and all work surfaces after every customer, etc. Someone tattooing out of their home probably isn't going to do all of the things I listed above.
no
I prefer to use a 7 RL but on Ocasions i do use a 9RL
Autoclaves, brah.
there would be no fabulous tattoos
No you can't use rubbing alcohol to sterilize tattoo needles. Rubbing alcohol might disinfect the needles but sterilization for tattoo equipment is usually done with a "Steam Sterilizer (Autoclave)" which removes spores by applying heat and pressure to the equipment.
Most tattoo needles are made of some grade of stainless steel. Surgical stainless steel is very common in tattooing needles.
Do you mean single file or magnum needles? No matter, tiny circles my friend.
Bleaching a used needle is not recommended as it may not effectively sterilize the needle. It is best to properly dispose of used needles in a Sharps container and use new, sterile needles for each injection to prevent the risk of infections or other complications.
Its better to just buy clean needles, but you can sterilize them yourself by boiling them in water for 10 minutes and then soaking them in rubbing alcohol for another 20 minutes
Autoclaves are used to sterilize particular types of equipment by using high pressure saturated steam. Such equipment would be that of laboratory glassware, prosthetics, and tattooing and body piercing utensils.
If you are unsure you should have them sterilized according to the local health board requirements. In fact you'll dispose of the needles or sterilize them in any event.