DIY Rit Dye Anodizing, How To Anodize Aluminum At Home

I'm restoring some old RC nitro engines and wanted to anodize the head. I've done this a few times in the past. The key is preparation. If you want a shiny mirror finish then the part need to be a shiny mirror finish.

RIT dye
https://www.amazon.com/gp/product/B00AQ7032C/ref=as_li_tl?ie=UTF8&tag=fintechcomm0f-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B00AQ7032C&linkId=f62963164342d361336be82b9d79394d

Sulfuric Battery Acid
https://www.amazon.com/gp/product/B003CKJDW6/ref=as_li_tl?ie=UTF8&tag=fintechcomm0f-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B003CKJDW6&linkId=41e09ee91747bf8482c90d2eb0d631ad