This section is from the book "The Boy Mechanic Vol. 2 1000 Things for Boys to Do", by Popular Mechanics Co.. Also available from Amazon: The Boy Mechanic, Vol2: 1000 Things for Boys to Do.
When two thin glasses are put one into the other they often become stuck and cannot be removed. To separate them with ease, set the lower glass in warm (not hot) water and pour cold water in the upper one. The expansion of the lower and the contraction of the upper will make release an easy matter. - Contributed by Maurice Bau-dier, New Orleans, La.
Bronze striping, when thoroughly dry, should be covered with a thin coat of white shellac "to keep it from tarnishing.