I unpacked my machine, set it up, and when homed for the first time I noticed this little rubber cover on the cool plate. I searched all over for an hour trying to find where this thing goes. I could been looking to hard and just over looked it.
But you can put the sock on without pulling off the hot end assembly
Just thought I’d add that in before the original poster stumbles into a possible can of worms considering I get the impression the OP might be fairly new to this