I've been focusing my efforts on refining my finishing techniques. I avoided finishing before this, but I'm feeling I need to take my work up a notch. So, I am now dry tumbling my PC pieces in pebbles, then fine sand for about 10 hours per each medium. After rinsing off the fine sand remnants, I quickly hand sand items from rough to fine grit with 3M sanding blocks. Then, after a final "polishing" with the new 3M polishing papers, I give them a quick buff with my hand made felt wheel on my converted bench top grinder. Seems to be working well!