On Tuesday, December 12, 2017 at 4:23:52 AM UTC-5, wrote:

I quit using Super Glue years ago. About the only thing it seems to glue
well, is a persons skin. I've used it on plastics, IT FAILED. I've used
it on wood, IT FAILED.

Piano tuners use it.

The tuning pins on a piano are a friction fit in a wood block.

Over time the holes can become oversized and the pins will slip. You can redrill and fit the next size pin, or even replace the pinblock, but it's a lot of work and expense on an old piano.

It's possible to flip the piano on its back (using the proper tools) and drip a little Super glue into the pinholes. Some people get good results this way and get a little more life out of an old piano not worth rebuilding.