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Some bigger blanks.
Hi Grinders,
Recently had the good fortune, to acquire a quantity of larger plate/float glass blanks, (ex-large public aquarium), in thicknesses 34.1mm (1.342") to 37.1mm (1.462").
Previously I have been working with 19mm float which really is too thin for mirrors of larger diameters. Currently my largest working mirror is 25.2" by 19mm thick, and though it performs ok at lower powers, I know a more stable figure can only be supported with thicker stiffer glass (its said that stiffness increases with the cube of thickness ie 2x as thick= 8x the stiffness), so intend to grind a new one same diameter in the 37mm thickness.
A picture (or two) of some of the blanks from 1.2 ton of ex-aquarium viewing panels. Diameters 12.2" to 33".
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