I have a 5lb tumbler from HF, and I will use some walnut shells (from petco) + some flitz media additive.
I would like to know how long to let the tumbler run with the playfield parts (screws, post, etc...) ? 2 hours ? 4 hours ? 24 hours ? 48 hours ?
I already cleaned them with an ultrasonic cleaner, but I want to make them shiny and look like new.