Precise angles can be cut from sheet metal using an angle block.
An angle block is a tool that helps wood or metal workers cut materials at a specific angle. The standard angle block tool consists of a precision engineered metal triangle set at a 90 degree angle. Using the other two corners of the triangle as a guide, crafters can quickly and easily determine where to cut sheet metal or wooden objects. Most users have a variety of angle blocks to measure a wide range of angles.
These tools can be used for various functions in a home or commercial workshop. In addition to helping workers measure cuts, the angle block can be placed between two objects to determine the size of an existing angle. For example, a worker trying to recreate a piece of furniture might hold the angle block between two adjacent pieces of wood to measure the exact angle between those objects. Angle blocks also help installers locate objects in the field and install them in the correct position.
An angle block set or kit contains a full selection of triangles to represent different angles. More advanced units offer angles that vary by just one degree, while basic kits include tools with angles in five degree increments. Some of these kits also allow workers to combine several different angles to achieve the desired size. Typically, the more expensive sets offer precision-machined tools and smooth edges for maximum precision.
To use one of these angled blocks, craftsmen often use clamps to hold the block against the object they are working on. It often takes several tries to find the right angle locking tool when the worker is trying to match an existing object. With the clamp holding the block in place, the worker can use a pencil to mark the correct angle. Some may find the correct angle using the block and then set a router or miter saw to that angle in preparation for cutting the object once the angle block has been removed.
Adjustable angle blocks provide a compact alternative to traditional kits. These units include a block of wood or metal, which supports a steel wheel. The wheel features a cutaway section along its outer diameter, as well as a series of markings to represent different angles. Users manually turn the wheel to adjust the crop size and change the specified angle. These adjustable templates work best in small workspaces, but may not offer the same level of precision as a standard set of blocks.