I'm not sure what lines you're referring to, but nothing cleans brass like stainless steel pins with liquid cleaner in a rotary tumbler.
Still happily answering to the call-sign Peetza.
You do not HAVE a soul. You ARE a soul. You HAVE a body.
He is no fool who gives what he can not keep to gain what he can not lose.
-Jim Eliott, paraphrasing Philip Henry.