How to Prepare Hundreds of Castings for Polishing 

Moore's discs and 3m Unitized wheels work for me. Do you ever tumble in porcelain or plastic abrasive?

So just a warning about solder paste. It tends to be brittle in my experience. I would not use it for parts that will have high shear or twisting forces placed on them.

Use rotary file on casting sprue. Spend hours less time. Or belt sander all manufactures use one or the other .Great channel I have recommended you to a few people needing help.

Solder paste is great for chains like that. I've used before on a byzantine chain I made from scratch. So much easier and faster. I wear it everyday as a bracelet for about 4 years; only 2 links ever opened. Oh yeah, and it's fine silver (I had just started, no idea what I was doing 🤷)

Hi its always good to break up repetitive tasks into a few at a time. How do you eat an elephant? One bite at a time. Keep up the good work man.

where did you learn what you know today?

just use tripoli 🤡