Jenny

By Jenny Hardness conversion for mold steel is an empirical estimate, not an exact unit conversion. A report may display HRC, HBW, or HV equivalents, but acceptance should begin with the original measured scale, method, location, material condition, and applicable reference table. When practical, require direct testing in the drawing’s specified scale; treat a converted […]

By Jenny Surface roughness cutoff selection for mold components should be agreed as a complete measurement method, not chosen after a result is known. Specify the feature, trace direction, parameter, filter and cutoff settings, form treatment, profile evaluation length, and report format before acceptance. That makes a surface report reproducible and keeps filtering from quietly

By Jenny For mold components, measure surface roughness in the direction defined by the drawing or agreed inspection plan; where it is not defined, first identify the actual surface lay and document the chosen trace direction. Comparing reports is only meaningful when direction, location, parameter, filtering conditions, and acceptance basis are aligned. Why measurement direction

By Jenny Position tolerance for mold holes should be approved as a complete datum-referenced requirement, not as separate X and Y readings. True position is the theoretically exact location established from the datum reference frame and basic dimensions; position tolerance is the permitted variation around it. A sound approval aligns the drawing, datum setup, feature

By Jenny A surface-profile requirement for a mold insert controls a defined three-dimensional surface against a tolerance zone. When specified, datum references determine how the insert is oriented and located for evaluation. Approval should therefore confirm the drawing interpretation, datum simulation, CAD revision, inspected extent, coverage, and reporting convention—not simply accept a favorable color map.

By Jenny Angularity measurement for mold components starts by simulating the drawing datums, then evaluating the entire specified inclined face against a linear tolerance zone set at the basic angle. A reported angle by itself is not enough. Buyers should approve the datum setup, measured-face coverage, and reporting logic before deciding whether a fixture-and-indicator method

By Jenny Runout measurement for mold pins is meaningful only when the drawing identifies a controlled surface and datum axis. Circular runout assesses radial indication at one cross-section; total runout assesses variation across the specified surface while referenced to that same datum axis. A buyer should approve the datum simulation, measurement coverage, reporting method and

By Jenny Parallelism measurement for mold components is only meaningful when the drawing’s datum is simulated as intended and the controlled feature is evaluated against that reference. Buyers should approve the datum strategy, measurement coverage, reporting format, and disposition rules before production—not simply request a pass/fail result. This prevents a correct-looking measurement from answering the

By Jenny Perpendicularity measurement for mold components verifies whether a controlled surface, axis, or derived feature remains within the drawing’s orientation tolerance relative to its stated datum. A credible approval decision depends on the feature-control frame, datum simulation, tolerance-zone type, measured length or coverage, and report traceability—not simply on whether a part appears to be

By Jenny Straightness measurement for mold pins is comparable only when the drawing, controlled feature, setup, sampling coverage, and reporting method are the same. A surface-line result describes a measured line on the pin surface; an axis result describes a derived centerline from cylindrical data. Buyers should approve the specified requirement and the measurement plan