OpexMX Articles
Insights and best practices on maintenance management, reliability, and manufacturing operations.
Defect Elimination: Getting Off the Fail-and-Fix Treadmill
Most maintenance teams are excellent at fixing things, and that is the wrong target. Defect elimination breaks the fail-and-fix loop by removing causes instead of speeding up repair. The process, the symptom-vs-cause skill, and why the no-time objection is backwards.
5S in Maintenance: Not Housekeeping, a Defect-Detection System
5S is dismissed as cleaning because most teams do it once and quit. Done as a system, it is the cheapest defect-detection layer a reliability program has. The five S in a maintenance context, why Shine is the real prize, and how to sustain it past week three.
CMMS Data Migration: The Step That Decides Whether Your New System Survives
The software is the easy part. Migrating dirty, decade-old asset and parts data into a new CMMS is where implementations die. What to migrate, what to leave behind, the cleanup that matters, and a phased cutover that does not take the plant down with it.
CMMS vs EAM: Which One Do You Actually Need?
Vendors use CMMS and EAM interchangeably, but they are not the same tool. A plain-language breakdown of where each starts and stops, the overlap zone, and a four-question test to pick the right one without overbuying.
Oil Analysis for Predictive Maintenance: Reading the Machine’s Blood Test
Oil is the blood test of a machine — wear metals, contamination, and degradation each point to a different fault. Which tests matter, how to sample without poisoning the data, and the one rule that separates a useful program from an expensive one.
Run-to-Failure Maintenance: When Doing Nothing Is the Right Strategy
Run-to-failure is not neglect — it is a deliberate maintenance strategy for the right assets. What RTF actually requires, when it pays off, when it is reckless, and how to decide which assets earn it.
FFT & Vibration Monitoring: The Foundation of Predictive Maintenance in Industry 4.0
Machine failures rarely happen without warning. FFT (Fast Fourier Transform) and vibration monitoring enable maintenance teams to identify developing faults before they become costly breakdowns. Learn how frequency analysis helps detect imbalance, misalignment, bearing defects, gear wear, and other machine issues while supporting predictive maintenance initiatives through OpexMX.
A Cheap, Safe, High-Precision RAG Pipeline: Architecture Notes
How we wired a copilot + retrieval pipeline for a maintenance CMMS that is cheap per request, safe against prompt injection, and precise at retrieval — without a frontier model on every turn. Six stages, cheapest-first, one generation call.
Clean-Room PDF Extraction at the Edge: How OpexMX Runs pdftotext Inside a Cloudflare Worker for RAG
Industrial manuals use subset CID fonts with no ToUnicode map, so every JavaScript PDF library emits glyph garbage — and RAG over garbage text is garbage retrieval. Here is how OpexMX wrote its own clean-room PDF extractor in Rust, compiled it to WASM, and runs it inside the edge Worker that also embeds and indexes the chunks.