fine art

home & garden

jewelry

work in progress

videos

3-d printer
ahp tools
engineering kinetic sculpture
everlast tools
finish work & patinas
focus on art
how to create a sculpture
longevity tools
milling machine & metal lathe
public art
shop math: measuring & leveling
studio tour
tools for the studio
transporting & installing
weld.com videos
arc welding
bending & shaping
cutting & grinding
general welding
health & safety
mig welding
other techniques
oxygen-acetylene
specific projects
tig welding
tool how-to's

RECENT VIDEOS
  * Introducing the Everlast 221STi Multiprocess AC / DC Welder
  * Are Multiprocess Welders Prone to Failure?
  * How to Cut Metal Using a CNC Plasma Table
  * How to Work Alone: Moving Heavy Metal
  * An Easy Way to Mark Your Metal for a Perfect Cut


more ...



"It's still a wonder to me that Kevin was able to create something that addresses what I was looking for based on a brief conversation. It's tactile, relaxing to listen to, and my sighted friends tell me it's beautiful as well."
--Denise Thompson, Founder and Executive Director, Creating Community Inclusion, Inc., Phoenix, Arizona



Bookmark and Share



< Back
Next >


How to Weld Thick Metal With a TIG Welder



Kevin is setting up his new Everlast PowerTIG 251Si multiprocess welder for TIG welding some railroad spikes. He's working on one of his Shitake Agaves, so he thought he'd give the welder something heavy to chew on.

On the panel, he has it set on high frequency start, standard TIG - no pulse - 150 amps, and 4T because he's using the welding torch trigger instead of the foot pedal. He's set the welder to 1 second of upslope and 1 amp to start, 1 second of downslope, and 4 amps to stop. He pushes the button to put his settings into preset mode, and he's ready to go.

Why is Kevin using TIG welding for this project? He wants to check out this new machine at some higher amps to see how it does, test the cooling capability of the machine, and to see if he can hit the duty cycle. He also likes TIG welding because it's clean, basically smoke free and quieter.

If you look on his workbench, you can see the mess he made when he was using this welder to MIG weld the base of the sculpture. There's lots of spatter and debris you just don't get with TIG welding. With TIG, you get a nice clean weld - a nice clean joint so you don't have to clean it up. That's helpful with this part of the sculpture, which is sticks up above the base and will be more visible, so he wants nice, clean welds. He used the MIG welder for the structural, unseen part of the sculpture.

Kevin puts on his safety equipment and tacks the two railroad spikes together. The tack looks pretty good, although you can see where the gas hadn't quite purged out of the torch at the beginning. He runs another bead on the side of the spike and is able to get a puddle going. He says he probably could bump up the amperage a bit from 150 to 165, but he gets a nice looking bead with no holes or porosity - just the way it's supposed to turn out.

Lessons learned: be sure you get all the rust off the metal to get a good, clean solid weld. Also, the machine seems quite capable of welding heavy metal.

Kevin is ready to get back to working on this sculpture, but you might want to stick around just to see why you need to switch those cables when moving from MIG to TIG welding ....

Watch more videos now