Creative persons needed.....

All of us are aware of the mercury parabola for astronomical work.

There should be a way to utilize this principle with another substance like a slow cure epoxy that can be surface bonded with a second substance that can be aluminized. Temperature control for finished mirror not being an issue at this time.

Every garage could have a mirror up to 1 meter in diameter in process. Focal length set by rotational speed.

There should be enough brain payload & freight to accomplish this in a practical manner here on this forum.

I'm just a beginner in all this, I came across a site awhile back about mercury parabola's. the draw back we all know is the fact that they must always point up.
I had an idea and I don't know if its do-able or not.
It will add higher cost to a mercury mirror and might have to be a smaller mirror maybe.
Anyway my idea was to make the parabola out of some sort metal. pour in the mercury and start the spin up and then some how electronicly magnetize the whole thing to allow it to till without the mercury running all over the place.
I imagine it would take a good amount of power to magnetize a 1 meter area depening on the thickness of the parabola. but seeing that the mercury is very thin when it spins out, maybe not. I don't know, its just the first idea I had when I read about the mercury mirrors

Larry, I would have to check the densities, but maybe you could float mercury on colodion while spinning it and it would set-up in form making it permenent. You would still suffer some gravity deformation though. Actually it wouldn't matter which one was on top.