Tempered glass can not be cut - Period. The way normal glass is made is that it is cooled down very slowly and evenly. This allows the glass to shrink uniformly while cooling. Tempered glass is cooled quickly. Because of the amount of mass there, the edges cool first and solidify. Then as the inside cools it wants to shrink but can't since the outside of the glass piece has solidified. The inside then is pulling on the inside and ends up under tension. If any part of the sheet weakens, the entire piece is able to release the internal tension and shatters into the 1/4" pieces we all love.
If you untemper the glass by reheating it (Usually while floating on a pool of mercury) and then cool it slowly the glass can be cut just like normal glass. It must then be retempered.
Laminated glass is 2 pieces of normal glass with either a mesh grid work or plastic sheet in between. This can be cut normally but is a bit more difficult because of the inside layer.
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Today's Featured Article - Harvestin Corn in Southern Wisconsin: The Early Years - by Pat Browning. In this area of Wisconsin, most crops are raised to support livestock production or dairy herds in various forms. Corn products were harvested for grain, and for ensilage (we always just called it 'silage'). Silo Filling Time On dairy farms back in the 30's and into the first half of the 40's, making of corn silage was done with horses pulling a corn binder producing tied bundles of fresh, sweet-smelling corn plants, nice green leaves with ear; the
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