Inspection Before, During and After Welding is Critical

Checklists for the CWI, welder and other production personnel

Weld inspection should not just take place after welding. Inspection before and during welding is critical.  But what can you inspect if welding has not been performed? Take a look at the checklists below for pre, during and post weld inspection.   Most of these items fall under the responsibility of the welding inspector, but any party involved […]

The CWI Exam

A look into the 3 parts of this challenging examination

If you want to become a certified welding inspector, you will have to take a three-part exam. The three parts are fundamentals, practical and code.  The topics you’ll encounter in each are detailed below. Part A – Fundamentals This section of the exam will test your knowledge in a wide variety of subjects related to […]

How Many Inches Of Mig Wire Per Pound

Easily calculate number of inches of wire per package size for any wire diameter

Have you ever wondered, or have you ever been asked how many inches of wire are in one pound of filler metal?  You may have been asked something like: “How many inches of wire are there in a 25LB spool of .035” ER70S-6 mig wire?”  Typically, this questions is asked when someone is trying to […]

9 Basic Steps to Reading Welding Symbols for Groove Welds

Reading welding symbols is very important at several levels of an organization. A welder needs to be able to interpret welding symbols to insure he puts down the right kind of weld, that he prepares the joint properly, that he places the weld in the right spot, right sequence, right dimension, etc. A design engineer […]

How To Weld 4140 Steel

Let’s keep it simple. 4140 steel can be welded without problems as long as you follow some simple guidelines. We will not be discussing the metallurgical properties of 4140 or trying to explain what happens to its microstructure when it cools too rapidly.  4140 steel is alloyed with chromium and molybdenum, hence the term chromoly […]

Storing and Re-drying Low Hydrogen Electrodes

Low hydrogen stick electrodes come in hermetically sealed cans to prevent moisture pick up. However, once the package is open the coating can be above permissible levels of moisture within a few hours. The rate of moisture pickup depends on several factors including but not limited to relative humidity, electrode coating characteristics, and storage locations. […]

Mig Welding With S3 vs S6 Wire

Is ER70S-3 even necessary anymore?

One of the most frequently asked questions is if there is a valid reason to use an ER70S-3 (S3) mig wire versus the more commonly used ER70S-6 (S6) wire.    Both wires belong to AWS Specification A5.18 and can be used interchangeably in most applications because they provide almost identical mechanical properties.  There is subtle difference between the two […]

Understanding the Skills Gap

Challenges and Opportunities

If you work in the manufacturing industry you have heard of the Skills Gap. This refers to the current and growing shortage of skilled workers in the manufacturing sector. This problem is not isolated to the United States, this is a worldwide problem. There are several numbers thrown around, these are all estimates, but they […]

Where Should I Buy My First Welding Machine

Online, big box store or industrial distributor?

Buying your first welding machine can be stressful. Even the cheap brands can cost around $300-400 for a decent mig welder. Deciding where to buy is critical. You can certainly buy online, but you can also buy through industrial distributors or big box stores like Lowe’s and Home Depot. So how do you choose? Here […]