Which type of blade is recommended for cutting IMC or rigid conduit?

The recommendation for using an 18 tooth blade for cutting Intermediate Metal Conduit (IMC) or rigid conduit is based on the balance between cutting efficiency and finish quality. A blade with 18 teeth provides a good compromise, allowing for quicker cuts while still maintaining a clean edge.

With fewer teeth than higher-tooth options, such as a 24 tooth or a 32 tooth blade, the 18 tooth blade can remove material more rapidly, which is particularly useful for denser materials like metal conduits. This is essential in applications where speed is important, like in construction or electrical work, while still preventing excessive burrs or deformation, which can occur with blades that have too few teeth.

Higher tooth count blades, such as a 32 tooth blade, are typically designed for finer cutting, suited for thinner materials or for achieving smoother finishes, which isn't necessary for cutting IMC or rigid conduit. A 12 tooth blade might be too aggressive for this type of work, potentially leading to rough edges and increased wear, while a 24 tooth blade may cut too slowly or may not provide the most efficient rate for this particular task. Thus, the choice of an 18 tooth blade aligns perfectly with the needs for cutting through IMC and rigid