In‑Process Inspection: Elevating 3‑D‑Printed Part Quality

Writer’s Note: This is the first in a series of posts introducing the Mark X, our latest 3‑D printer. Today we explore its in‑process inspection capability—a breakthrough that lets users monitor print quality in real time, closing the loop on 3‑D manufacturing.

Why Closing the Loop Matters

In an ideal world, a CAD model would turn into a perfectly fitting part without trial and error. In reality, every fabrication method introduces small deviations, so designers specify tolerances—clear boundaries of acceptable variation—to keep parts functional and cost‑effective.

While tolerances are a designer’s tool, they become a fabrication bottleneck. Machinists must measure each part after completion; if any dimension falls outside its limits, the part is scrapped. This post‑process measurement is a major pain point for additive manufacturing, where printers are inherently open‑loop—tolerances cannot be verified until the print finishes.

In‑process inspection changes that. By integrating rapid, high‑resolution scanning during printing, the Mark X removes guesswork and gives users unprecedented transparency.

How It Works

The workflow is straightforward:

1. While configuring a job in Eiger, users select specific layers to scan. Scan time depends on part size and desired resolution; the system achieves 1 µm accuracy in Z and 25‑50 µm in XY.
2. After a scan completes, the data is uploaded to Eiger’s cloud platform, where the 3‑D model is color‑coded by distance from the nozzle.
3. Engineers can then use built‑in measurement tools—circle, distance, rectangle—to verify whether critical features remain within tolerance while the print is still underway.
4. If a dimension falls outside limits, the job can be halted immediately, saving material and time.

Although the loop is still human‑closed, the real‑time data enables rapid CAD adjustments and repeatable, high‑quality prints—faster, cheaper, and more reliable.

Looking Ahead

The Mark X is a pivotal step toward fully closed‑loop additive manufacturing. Future firmware updates will unlock even smarter laser control and deeper software integration, turning the printer into a self‑optimizing production system.

Investing in the Mark X is not just buying hardware; it’s an investment in the future of automated, high‑precision manufacturing. Stay tuned as we continue to refine the technology and push the boundaries of what's possible with 3‑D printing.

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