What is tailors ham used for?

A tailor's ham is a sausage-shaped, firm cushion usually stuffed with sawdust or other similar material, used in sewing and dressmaking. It resembles a small ham or bolster. It assists in pressing seams, easing curves and shaping clothing during the garment construction process.

For example, one use of a tailor's ham is to help iron shirt sleeves. You place a tailor's ham inside a shirt sleeve and iron the sleeve over the ham. This helps to create a smooth and even finish.