CETOL 6σ — Tolerance Analysis Software by Sigmetrix

Catch tolerance problems before they become manufacturing costs.

SnL Nexus is proud to be an authorized distributor of CETOL 6σ by Sigmetrix, the world’s leading 3D tolerance analysis software for product design and manufacturing teams.

The Problem CETOL Solves

Every part your team designs has variation — no manufactured component is ever perfectly to nominal. Left unmanaged, that variation shows up as scrap, rework, warranty claims, and product recalls. CETOL 6σ lets engineers see the impact of dimensional and assembly variation before a design ever reaches the shop floor.

Why CETOL, and Not Monte Carlo Simulation?

Most tolerance analysis tools rely on Monte Carlo simulation — running tens of thousands of random trials to estimate how variation behaves. It works, but it’s slow, computationally heavy, and gives slightly different answers every time you run it.

CETOL 6σ uses a different mathematical approach — the Method of System Moments combined with Precise Constraint Technology — to calculate results directly and analytically. In independent benchmark testing, this approach matched the accuracy of a Monte Carlo simulation run with a million samples, while requiring a small fraction of the computational effort.

How It Works

• Operates directly inside your CAD system (PTC Creo, SOLIDWORKS, Siemens NX, CATIA) — no data export or conversion
• Reads existing tolerance data (PMI) from your models automatically
• Instantly updates results as tolerances or dimensions change
• Sensitivity and contribution analysis shows exactly which dimensions are driving variation
• Generates clear, customizable reports for engineering, manufacturing, and quality teams

Who It’s For

Design, manufacturing, and quality engineering teams — especially in precision manufacturing, electronics, medical devices, automotive, and industrial equipment.

Why It Matters to Your Bottom Line

• Fewer prototype cycles and design iterations
• Reduced scrap and warranty costs
• Faster time to market
• Better-informed supplier and tolerance decisions

As an authorized Sigmetrix distributor, SnL Nexus provides CETOL 6σ licensing, implementation support, and training for manufacturers looking to build tolerance analysis into their design process.