Articles, updates and engineering notes

A place for the thinking around the work.

The Mechatrovich blog can connect an engineering method to a working tool, explain a product decision, share a knowledge update, or simply document an observation worth keeping.

FEATURED TECHNICAL GUIDE QUALITY & STATISTICS

Cp vs Cpk: what the difference actually tells you

Understand potential capability, process centering, and why a stable process should come before the final capability conclusion.

Read the article → Try the Cpk tool
WORKED EXAMPLE QUALITY & STATISTICS

Gage R&R example: calculation and interpretation

Follow 20 measurements through repeatability, reproducibility, Total GRR, part variation, %Study Variation, and ndc—then reproduce the result in the calculator.

Work through the example → Try the same data
TECHNICAL GUIDE QUALITY & STATISTICS

Gage R&R basics

A practical introduction to repeatability, reproducibility, %GRR, variance components, and number of distinct categories.

Read the article → Try the MSA preview
TECHNICAL GUIDE QUALITY & STATISTICS

X̄–R charts and rational subgrouping

Why subgroup logic, data order, and enough subgroups matter before interpreting calculated control limits.

Read the article → Try the SPC tool
WORKFLOW ARTICLE MEASUREMENT DATA & AUTOMATION

From machine-export CSV to a reviewable table

Header detection, numeric-column mapping, specification checks, and row traceability in a practical inspection workflow.

Read the explanation → Try the inspector
RESOURCE SPOTLIGHT CAD & PRODUCT DESIGN

Building a practical Siemens NX reference

Explore the NX digital guide and the role of structured references beside day-to-day CAD work.

Explore the NX book → View on Gumroad