[dj9990 (Dave)]

Hi people, I'm Dave. some time back, I was given 2, 12 Inch peaces of plate glass. One's 19mm and the other's 26mm.
So the obvious conclusion, was "lets build a telescope".
Anyway, to cut a short story long, before I even got all the gear together for this little project I've hit a snag, "My tool glass size", should I be using a 12" tool on a 12" mirror? I'm a bit concerned about how Figuring would go, with such a large tool.
Does anyone know if there's an optimum tool to mirror ratio?
Or do I just use my big tool for the grinding and make a separate smaller pitch-lap for the polishing and figuring.
Dave.