In alt.home.repair, on Sat, 1 Aug 2020 13:18:33 -0400, "Phil Kangas"
wrote:

I have a Westclox battery powered wall clock with a
7 inch diameter face and it has a very annoying
tic-toc sound that I cannot figure out how to silence.
I tried gluing hardwood blocks to the back and it
helped a little but not enough. I find it hard to fall
asleep because of this. Perhaps filling in the back
with quick crete cement would do it? I suppose the
clock gearbox itself would have to be protected so
it could be replaced sometime in the future.
Or maybe just a space to allow changing the battery.
Any hints?
phil the old hermit

I went through this when I was 13 years old. I just could't take it
anymore; like you it kept me from falling asleep. I complained to my
mother and she gave me an old AC electric clock. Problem solved. Check
with your mother.