Peter Zelinski

Polymer AM

Video: Smith & Nephew on 3D Printing Patient-Specific Surgical Instruments

Using MRI and additive manufacturing to produce a cutting block customized to the patient aids the precision of the surgery.

Metal AM

How Machine Learning Is Moving AM Beyond Trial and Error

A Colorado alliance has found the link between AM and AI. Using machine learning to map the formula for successful metal 3D printing, researchers aim to know the right parameters for any new part with few or no test builds.

Interview Series

Video: Moldmaker Succeeding with Conformal Cooling

B&J Specialty now complements its machining capabilities with metal 3D printing for making mold inserts with cooling channels that follow the contours of the mold. The shop is even revisiting challenging molds from the past.

Metal AM

With Machine Learning, We Will Skip Ahead 100 Years

Machine learning or AI will prove vital to the advance of AM. Computational power will enable additive to advance much faster than if it had been invented in an earlier time.


Here Is What a Four-Laser Machine Can Do—and Here Is the Hardware Used to Do It

One laser gets you this far. Two lasers get you this much farther. These productivity comparisons with a four-laser machine also show the cooling geometry that brings four lasers together.

Hybrid Manufacturing

Product Removal Module Is a Multitasking Machine Tool Tailored to AM

An automatic bandsaw removes the parts and a milling cycle refurbishes the plate for the next build.


The Size Limit on Powder-Bed Machines Has Now Been Overcome, Says GE

Innovations enabling the new ATLAS machine are scalable to even bigger parts than the component shown at Formnext.

Design for Additive

Can Chemistry Set AM Free of the Cost and Constraints of Support Structures?

Support structure removal is costly and can prevent supports from being used in some areas of the part. This researcher may have found the answer that will make support structures easy.


Using Hybrid AM, GE Leverages Turbine Blade Repair into Efficiency Improvement

An engineering modification that would have been impractical or cost-prohibitive in the past is realized on a machine tool performing metal 3D printing and machining in the same cycle.

Design for Additive

Additive Manufacturing at EMO 2017

Here are some of the AM technologies Editor-in-Chief Peter Zelinski saw at the world’s largest metalworking show.


Video: Strength of Aluminum Metal Matrix Composite Versus Aluminum Alloy

The Aluminum MMC demonstrates a yield strength greater than 1018 steel. Additive opens the way to applying advanced materials such as this.

Polymer AM

Video: 3D-Printed Composite Hooks Lifts Hundreds of Pounds

AM challenges expectations about which applications and part types call for metal and which are appropriate for polymer.