Here are some of the tools I use around the shop.
1 – cylinder polishing wheels- medium and fine grit from Rio Grande – for polishing nib tips– don’t get the extra hard versions.
2- hair brush wheel for cleaning threads in a dremel (slowish speeds) – don’t get the short hair versions, they’re way harder
3- fine pliers – no teeth – with blue painters tape on one side – for gripping and bending twisting nibs without marking
4- various bits of hard wire bent with weird curves, and round or pointy bits ground onto the ends for poking stuff or hand chasing threads inside a cap or barrel. Great for cleaning bits of old dirt out of threads.
6- little wrench – I couldn’t find my TWSBI wrench for the photo – but those work on lots of different piston units.