Quoted from rcbrown316:I just ran my first batch of hardware and pinballs through walnut media in a lortone rotary tumbler.
That's impressive results. I use any metal polish available, cheaper the better.
Note. I recently got from HF the fine walnut media (don't stock medium apparently) and it turns to powder too quick and won't shine well. Make sure you have the medium size walnut particles after using your ultrasonic to get rid of any grease.