An inexpensive angle grinder with a diamond blade can cut perfect circles and squares in the toughest tile. You can buy a 4- or 4-1/2-in. grinder and a dry-cut diamond blade for as little as $75.

Chances are, your saw will come with a multipurpose diamond-grit blade necessary for cutting tile. However, some low-quality blades that come with budget-friendly saws can wobble a bit while ...