I will link to a buffer from harbor freight, and I don’t usually recommend tools from there if they are important or you require a certain quality, but this 6" buffer seems to be holding up well over the years. With this cheap buffer from h.f. I rescued a ton of dvd’s for netflix. I would get them and they would be so scratched my player would have issues. So I would take the dvd out to the shop and give it a once over with the buffer. You have to pay attention to the direction the buffer is spinning and only polish/buff from the center out on the disc, only use a fine polishing compound at the start, and never let the dvd sit in one spot on the buffer or it will do some real damage to it. But I was very successful getting a lot of dvd’s repaired back to a working state with this method. It takes time, and you have be patient, but you can buff them out pretty nicely. Might save the library some money.
https://www.harborfreight.com/6-in-buffer-61557.html?_br_psugg_q=buffer+polisher
A guy in our data center couldn’t figure out who owned a particular machine that he needed to work on. So his solution to figure it out was to let them come to him. He went and pulled out the network cable and waited. He was escorted out a little while later. The moral of the story is don’t go disabling production machines on purpose.