A lot of them had carpets. They weren't usually on the floor, though. They were put on the walls to insulate their commie bloc walls and also for decoration.
There are far better jobs for people to have, and far better ways to sell home appliances. Frankly, online sales would be way better for everyone involved, if only they had more information... instead of just flashy pictures and flavor text.
How the hell else are they supposed to make sales? They're basically the physical embodiment of telemarketers. I don't agree with the practice, but the "nice" salesmen probably don't make much money.
https://www.thingiverse.com/thing:7151519
I made a cord clip for the motor cord. Oh also, I ended up using a Sanitaire belt. It's beefier than the original belt, but the amount of stretch seems right.
It depends if the bearings are plain or ball. Plain bearings should be oiled, but ball bearings will probably be fine if left alone. Usually you can tell if there are holes to put oil in.
32V was common in homes that were not on a power grid, and had their own little baby power plant. Usually a one cylinder engine and a battery bank. Farm houses, mostly. Light bulbs and appliances were available in 32VDC.
It looks like metallic paint. If I had to venture a guess... I would say it was polished first then bead blasted. Or maybe the other way around. You might want to experiment on other cast aluminum stuff. Get an old engine oil pan or transmission case from a mechanic shop.