I see a lot of people using hand files to file down what’s left of the cut sprue (is there a technical term for that?). Could it just be dremeled carefully? Or is the hand file technique the best?
The biggest reason why I ask is because I want to sprue my ring on the insides so as not to mess up the outside detail. I won’t be able to get a hand file inside to clean up where the sprues were.
What do you suggest? A dremel is the only thing I could think of. I have needle files but I don’t know what grit they are.