ClayOgre

A DIY radial arm saw, more or less. And yes, I agree with all the people who have pointed out the safety issues. There's a reason miter saws have more or less replaced the radial arm saw.

I can also see certain possibilities in it as a personal defense item. It probably has a certain amount of heft to it.

Not exactly the safest option. One wrong move and you lose a finger. Table saws are powerful and the blade spins at something like 4000 rpm or higher.

https://www.kingarthurflour.com/recipes/king-arthur-flours-original-cake-pan-cake-recipe

I wonder if what you have made is basically Formica.

Sounds like particle board. I don't think you have much of a choice, you'll have to replace it.

Interesting. I'm wondering if it could be scaled up in size. I have a very old disk from probably the 1940's or so. I think it's something like 17 inches in diameter, maybe. It's a studio recording of my mother singing.

Eggs sous vide. You can do this in a good quality thermos. Put the eggs in with some boiling water and wait a while.http://www.seriouseats.com/2013/10/sous-vide-101-all-about-eggs.html

Typo in your title. Should be planing, not planning.