Stephen Mraz

Senior Editor,
Machine Design

Steve serves as Senior Editor of Machine Design.  He has 23 years of service and has a B.S. Biomedical Engineering from Steve was a Flight officer in the U.S. Navy. He is currently responsible for areas such as aerospace and medical.

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Self-Clinching Captive-Panel Screws Eliminate Loose Parts
The PFC2 and PFS2 self-clinching captive-panel screws from PennEngineering (, Danboro, Pa., provide secure and permanent attachment for thin-metal assemblies. The fasteners can also....
Postcards from the Hubble Telescope
In honor of the Hubble Telescope’s 25th Anniversary, here are a few spectacular images taken by the space-based telescope.
What’s the Difference Between a Motor and a Drive?
A motor is the mechanical or electrical device that generates the rotational or linear force used to power a machine. A drive is the electronic device that harnesses and controls the electrical energy sent to the motor.
Placenta-on-a-Chip lets Researchers Better Understand Pregnancy
A placenta-on-a chip mimics the structure and function of the placenta on a microscopic scale, including the transfer of nutrients from the mother to the fetus.
Smart Bandage Detects Bed Sores Before They Are Visible
A new type of bandage detects wounds rather than protects them, and could help doctors treat and cure bed sores before they break the skin and get infected.
Mass Spectrometry Leads to Quicker, Safer Biopsies
A new biopsy method may cut down on time to diagnosis.
New Flange Coupling Tackles Heavy-Duty Tasks
A new coupling makes it simpler to connect shafts.
Diaper Compound Boosts Power of Microscopes
Getting biological samples to absorb water makes details larger and easier to see with a microscope.
U.S. Exports and Imports of Fasteners Spike

After shrinking in February, imports and exports of iron and steel fasteners jumped in March as Asian imports rebounded, according to figures from Zepol Corp.

Squeeze Handle Permits One-Hand Actuation
The AC-50 Squeeze Handle Actuator enables one-hand squeeze operation.
Enclosure Cooler Packs More Cooling in Compact Package 2
TECA Crop.’s AHP-690- thermoelectric cooler keeps equipment and instruments at peak operating temperatures inside enclosures.
Friction Stir Welding Now Suitable for High-Volume Auto Assembly 2
Engineers from the Pacific Northwest National Laboratory (PNNL) have improved friction stir welding (FSW) so that it can now join aluminum sheets of varying thicknesses, a key capability for making welds that are strong in places where needed, yet light overall.
Silicone Adhesive Works on Automotive Electronics
Silicone adhesive works with a range of substrates.
Off to the Races: Indy 500 Winners Through the Years
Here’s a look at some of the memorable cars and drivers that have won the Indy 500 since the event began more than 100 years ago.
Heavy-Duty Caster Carries 50-Ton Loads
Engineers and technicians at Hamilton Caster (, Hamilton, Ohio, recently designed and built four 100,000-lb capacity casters for a federal contractor....
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