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  * Why You Need Preflow When Welding
  * How to Make a Perfect Right Angle Without Fancy Tools
  * How to Use Triangular Wave When Welding - and Why You'd Want To
  * 2 Ways to Adjust Z-Height on a CNC Table
  * Do Fume Extractors Really Work?

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"You are an absolute legend and an inspiration for all metal fabricators and artist around the globe!"
--Alex Prakhiy, Pacific Laser Arts, Taren Point, Australia

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"Let's make some sparks!"

Kevin calls upon a broad breadth of knowledge to create his fine art and home and garden sculptures.

Artist Kevin CaronHis experiences as a foreign-auto mechanic and in the U.S. Navy, where he repaired air support equipment, introduced him to innumerable fabrication tools and metal working and welding techniques. His curiosity and need to create physically what he conceives in his mind has led to his evolution as a contemporary artist.

Here you'll find lots of how-to videos in which he explains how he uses his welders - TIG, MIG and oxygen-acetylene - as well as a wide variety of tools - including an air hammer, English wheel, slip roll, plasma cutter, hydraulic pipe bender, metal lathe and mill - and techniques such as bending and shaping, and cutting and grinding, to create, transport and install his sculpture and public art.

Join Kevin in his studio by clicking on categories on the left.

If you'd like to see a how-to video on any specific technique or tool, please contact us.

If you have any questions about who Kevin's sponsors are, please visit the Disclosure Policy page.

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My Latest Video...

Why You Need Preflow When Welding
Why You Need Preflow When Welding
Feb 13, 2019

When you're about to start MIG welding or TIG welding, it's easy to forget to bleed the gas. Why is bleeding the gas through the cable important?

Kevin gets out his AHP AlphaMIG 250, which has a nice long MIG cable on it. The machine is cold - it has not been turned on yet. He is going to put on his welding safety gear and show you what happens when you don't use preflow or purge the line.

Kevin has the AHP AlphaMIG 250 set on 23.5 volts and 377 inches a minute. He has some 1/8" mild steel plate that he's ground down the edges on and clamped down to the workbench. He asks viewers to pay attention as he welds.

After he welds the seam he asks, "Did you hear the difference?" Kevin could hear it plainly. He shows the beginning of the weld where there is some porosity. That happened because the gas hadn't yet gotten from the gas bottle to the all the way to the end of the cable. When the gas is at the gun and you pull the trigger - Bam! - that gas is ready for you.

AHP also actually programmed in a little preflow for this MIG welder to try to stop that problem. It works pretty darn well. If he had used one of his older, big machines that does not have preflow you'd see a big old blob of porosity, and then all of a sudden the weld would look good.

Preflow is really imperative with TIG to help flush the line and get gas to the weld so it can do its job.

So what if you don't have a preset capability like this machine does? Just bump the trigger for a second. That'll help get the gas going. If you're TIG welding, just stomp the foot pedal for a second get the gas flowing. Or set up your preflow on your welder. I like mine set at about a 1/2 to 3/4 of a second.

So that's just a friendly little reminder for you guys who are used to welding and don't even think about it and Kevin hopes it's helpful for new welders, too.

Kevin is ready to go back to work, but you might want to stick around for a moment to see Kevin explain the importance of passing gas .....