jdanforth wrote: Doesn’t this screw up your viewing lines using a round polisher?!?

The polisher must have random ordital motion.
A "round" polisher with circular motion won’t do.
If the pads are soft enougn and the polishing agent fine enough there will be no visable lines,
therefore no problems viewing your Dags regardless of the angle.
Some Daguerreotypists use a series of fine submicron sized polishing agents with a liquid carrier such as olive oil or xylene to achieve the best polish.
If you can see lines, then you need to polish more with a finer polishing agent.
If you still see lines, then you may be applying too much pressure on the polisher.