Summary

Use the finest print quality that you are comfortable with for the arm, base and LP record,

There are two approaches for the cover, which ideally is transparent. The most straightforward approach is to use a transparent filament (e.g. Polymaker PVB). To get the best transparency, I printed with the spiral setting and kept the layers thin. There were print layers still visible. I used the cover with the tab for this approach so that I could hold the tab with tweezers while I applied alcohol as a smoothing agent. The tab was then broken or cut off.

The other approach for the cover is to use the cover file, without the tab, to make a mold for a clear epoxy resin casting. This approach can yield a more transparent cover but requires much more time and technique to remove the lines in the mold and get the right release agents. I was never completely satisfied with either approach but either works.