Glass

Manufactured from Sand in a Kiln.

Follow these steps to create glass:
 * 1) Place the sand in the kiln, along with some fuel (i.e. charcoal or hardwood billets). Light the kiln.
 * 2) Use the bellows to heat up the kiln to 1000 degrees.
 * 3) Wait for the sand to heat up all the way.
 * 4) Click the "Pull out" button (not the "Glassblowing" button)

Glass is an ingredient in:

Alchemical glassware, Empty bottle, Lamp post and Window module.

Glas Verre Стекло