P.S.I. Necessary before a disc or cartridge breaks

[Jorpho]

Anyway this question evolved into 2 different ways that I did not expect. 1. A scenario where the disc or cartridge is in the middle between two objects. 2. A scenario where the disc or cartridge is crushed under other discs or cartridges.

I do not understand why you think these scenarios are different.

if you are really serious you should also rotate your discs one quarter turn every three months.

Is that something vinyl collectors actually do?