Glass Block

Description
s are a very weak, forgeable building material. They can be used as a window, but like all window panes, it acts like a piece of furniture, letting the rain through. The sits on the edge of the block, providing a smooth surface on one side. A better option for windows is the Shower Glass Block which acts like a solid block and is easier to see through.

There is a similar block named Business Glass Centered, it sits in the center of the block. However, it is not a crafting ingredient in TVs

Note

 * drops Broken Glass upon destruction.
 * The Business Glass Plate Centered & Business Glass Sheet can be crafted and used as traps. They can also be upgraded with wood to prevent falling when walking over them.

Sources of Glass
A single requires the amount of glass ingredients to be smelted.

Any of these ingredients can be placed into the forge and will smelt into (s).

Crushed Sand

Glass Jar

Broken Glass

Beaker

Upgrading
The window panes, not the blocks and curved versions, can be reinforced with materials using any construction tool.