do i have to have fish paper rings?

The s1012 pro takes the same tips as the TS100 and the Pine64 Pinecil. I recommend the TS-D24 or TS-C4.

It also fits Hakko T12 tips (the longer ones), and a T12-D4 is another good one.

Either the TS or Hakko tips are available on Amazon and many other places.
Having a nice beefy chisel or wedge tip will help a lot with soldering fat wire on nickel.

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Before you conclude “bigger is better”, one of these irons is not useable for 99% of esk8. Good tips, solder, and prep go a very long way.