Choosing the Right Blade for Cutting EMT (Electrical Metallic Tubing)

Which type of blade is recommended for cutting EMT (electrical metallic tubing)?

a) Fine-tooth blade
b) Coarse-tooth blade
c) Bi-metal blade
d) Carbide-grit blade
Final answer:

Answer:

To cut EMT (electrical metallic tubing), a fine-tooth blade is recommended for a clean cut without burrs. A bi-metal blade is also a good choice due to its durability and flexibility. Coarse-tooth or carbide-grit blades are less suitable for standard EMT.

When cutting EMT (electrical metallic tubing), it is advisable to use a fine-tooth blade. EMT is a thin-walled metal conduit that is commonly used to protect electrical wires from external factors like impact or moisture. Using a blade with fine teeth ensures a cleaner cut without damaging the metal and reduces the likelihood of creating burrs that can damage electrical insulation.

A coarse-tooth blade is generally used for wood or other softer materials and may cause too rough of a cut on EMT. A bi-metal blade can be a good choice as well, as it is composed of high-speed steel teeth for cutting, welded to a flexible steel back, providing both durability and flexibility, which is useful for cutting metals. A carbide-grit blade might be used for materials that are more brittle or harder than standard metals, like ceramics or some plastics.

Given the properties of EMT and common cutting requirements, the fine-tooth blade or bi-metal blade would be the recommended choices, with fine-tooth being the most conventional and specific choice for EMT. The exact blade choice may also depend on the thickness of the EMT and the specifications required for the cut.