Tolerance is the range of acceptable variation in a part’s dimension. Allowance is a planned difference between two mating parts. Tolerance controls what’s allowed. Allowance sets the gap or fit between parts. Knowing both helps teams decide how loose or tight a part should be. This ensures smooth function, good assembly, and minimal waste.

CMM inspection uses a Coordinate Measuring Machine (CMM) to measure a part’s physical dimensions. This tool helps manufacturers check essential details like size, shape, and surface features. It ensures that each part matches its design specifications.

A NEMA rating is a classification system that indicates the level of protection an electrical enclosure provides against specific environmental conditions. These conditions may include exposure to water, dust, ice, or other factors that could harm electrical components. The ratings help manufacturers and designers select the appropriate enclosure for their equipment based on where it will be used.

Gravity die casting is a metal casting process where molten metal is poured into a reusable mold using gravity. Unlike some external pressure methods, this process relies solely on gravity to fill the mold. The result is parts with few defects and high precision.

Rapid tooling is the quick creation of molds, dies, or tools used in manufacturing. Modern methods like 3D printing, CNC machining, or additive manufacturing are used.

Traditional tooling can take weeks or even months to complete. In contrast, rapid tooling speeds up this process, allowing for much faster production. This is especially helpful when quick changes or adjustments are needed, such as during prototype development or small production runs.

Wire EDM uses a thin wire to cut through metal with electrical sparks. It’s best for fine, detailed work. Sinker EDM uses shaped electrodes to burn into the material, which is suitable for deep cavities. Wire EDM gives precise cuts and clean edges. Sinker EDM handles thicker parts and complex internal features. Your choice depends on the part shape, size, and accuracy needed.