Backsaw

Backsaw is a type of saw characterized by a reinforced back edge that adds rigidity to the saw blade, enabling more precise cuts than those achievable with other types of saws. The reinforcement typically comes in the form of a steel or brass strip along the top edge of the saw blade. This design feature allows for finer control and makes the backsaw an essential tool for woodworking, particularly in tasks requiring precision such as cutting dovetail joints, tenons, and miters.

Design and Features

The key feature of a backsaw is its stiffened back, which prevents the blade from bending during use. This rigidity allows for straighter, more accurate cuts. Backsaws are usually shorter than regular hand saws, with blade lengths ranging from 200mm to 400mm. They have relatively fine teeth with a high TPI (teeth per inch) count, which contributes to their ability to make smooth, precise cuts. The teeth of a backsaw may also be set to a minimal degree, further enhancing the saw's precision cutting capability.

Types of Backsaws

Several types of backsaws are available, each designed for specific woodworking tasks:

• Dovetail saw: With fine teeth and a thin blade, the dovetail saw is ideal for cutting dovetail joints in cabinetry and joinery.
• Tenon saw: Also known as a back tenon saw, it is typically larger than a dovetail saw and is used for cutting tenons for mortise and tenon joints.
• Miter saw: Designed for making precise crosscuts and miter cuts in wood. Miter saws can be manual or powered, with the manual version being a type of backsaw.
• Sash saw: A term that can refer to various medium-sized backsaws used in the construction of window sashes.

Usage

Backsaws are primarily used in fine woodworking and carpentry where precision is crucial. They are particularly favored for joinery work, such as creating dovetail joints, tenons, and miters. The technique for using a backsaw involves securing the workpiece, marking the cut line, and then carefully guiding the saw along the line with controlled, even strokes.

Maintenance

Proper maintenance of a backsaw is essential for its longevity and performance. This includes regular cleaning of the blade, ensuring the teeth are sharp and properly set, and storing the saw in a way that prevents damage to the blade. It is also important to use the saw for its intended purpose to avoid undue wear or damage.

See Also

• Hand saw
• Woodworking
• Carpentry
• Joinery