There are several methods for cutting tiles by hand without a tile cutter using a cutting tool such as a glass cutter or a carbide tipped pencil.
How do i cut glass wall tile.
To cut a ceramic tile using a glass cutter start by using a pencil and a square or a ruler shaped like a right angle to measure and mark your tile.
Next place the square right next to the marked line so you can use it as a guide then press down on the tile with the glass cutter and drag it along the line.
I found it difficult to wear gloves and work with the tile but you may want to wear.
Be sure to wear safety glasses as the glass does fly around.
Cut any glass wall tiles measuring 2 inches in size or smaller with glass tile nippers.
These nippers have two wheels that turn as they cut the glass rather than the straight jaws of hard tile.
Use a straight edge to mark the line with an erasable marker.
How to cut glass tile safety first.
Cutting glass tile with a bar cutter using a bar cutter to cut glass tiles is more efficient than using a scoring wheel and pliers because the machine can both score and cut the tile.
Glass tile is very fragile and you need to push the tile up to the blade very slowly.
The rationale for cutting glass tiles upside down is that the glass tile blade will cut the coating on the back first.
Also beware that your fingers may be cut with small tiny pieces of glass.