whats the best way?

There is only one way !!! Similar to what a dentist uses to clean his tools, tattoo artists use an autoclave to clean their tattoo machines and equipment. This sterilization technique is essential to prevent the spread of diseases and infections. Learn how to use an autoclave to clean a tattoo machine.
Plus use sterile bags to place each part in and make sure the temperature is at the correct level. I am worried when sum one asks this question as it makes me think mmmm you got a machine but dont fully understand how to use it or clean it !!!!

I'm still using the hospital autoclave though they charge me now. Still better than forking out for a brand new one just yet.

Some times you can get lucky like I did and get a good used autoclave. I paid $375 (U.S.) on ebay and I had to put in new seals in the door,and clean it up a bit. but it was well worth it. I ran a spore test and passed with flying colors and have ever sence. I am just glad that I was smart enough to do my reseach first and I have a brother that works on medical equipment for the Army. The best advice I can give you is " Do your reaserch and keep your eyes out for good deals.

My first suggestion is to learn what gets sterilized and what doesn't. What spore testing is. Learn about bagging/dating and what integrators are.

Needles: If you make them, you bag and then sterilize them, use them once and put in sharps container. If you bought pre- packaged and sterilized needles - you use them once, discard them in bio-hazard sharps container. You NEVER re-use them. Ever.

Items To Be Sterilized: tube/tip/grip combos get bagged and sterilized as well as re-usable ink cap holders, grip covers, etc..

You can use alcohol to get the excess ink off of your machine as well as disinfecting it with the proper products. But you can not fully sterilize a regular coil machine.

However, if you don't want to expose your machine to moisture/rust, they do sell hand held UV (black light) sanitizers that kill most germs.

Sorry guys, but this is a pet peeve of mine. Learn the difference between cleaning, disinfection (or sanitizing) and sterilization.

Your machine will NEVER be sterile.