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
  * How to Roll Metal in Small Diameters
  * How to Make Your Steel Different Colors
  * Why Is my TIG Tungsten Tip Blue? (and What to Do About It)
  * How to Easily Tack Aluminum When TIG Welding
  * Announcing our Contest Winners!


more ...



"I am so impressed that you continue to create new and fascinating pieces.... I'm tickled by 'Tuned Tails and I love Rust Devil, a visual and aural delight."
--Gwen Henson, Tempe, Arizona



Bookmark and Share



< Back
Next >


Plasma Cutter Tip Tricks



The Voice: Hey, Kev. What are you playing with now?

Kevin Caron: This is my plasma cutter. I was going to make a little cut on this piece of metal for a sculpture I'm working on, but the tip is worn out on it, so I've got to change tips. Come here, check it out.

This is the torch, and the little tip is in here. This is called a swirl ring. The tip goes down into the electrode and the nozzle will go inside this; when the air comes up through the torch head, or torch handle, it swirls through here. It comes out past the electrode in a swirl into the nozzle, swirling, and then there's an electrical arc that cuts across from the electrode to the nozzle, and that's where the plasma is developed. That's what actually makes it.

See how burned up this is? Let's look at a new one for a comparison so you can see the difference.

This is the old one; you can see a big pit right in the middle of it. This is the new one, and it's flat all the way across; nice and smooth. On the nozzle, you can see all the burning around the edge; the hole is a little elongated. On the new one, the hole is nice and clean, smooth and perfect right in the middle.

I'm going to show you a difference in the cuts. Let me put the old one back in. Now, we'll fire it up for just a second and make a little cut. I'll show you how to do this. [using plasma cutter]

That's the cut with the old nozzle and electrode in it. And you can see how wide they are. So, we'll change these out, put in a new nozzle, a new electrode, and that's the only change we're going to make. [using plasma cutter]

Now, you can see there's a little difference in the curve on the cut. With the new nozzle, it's a little tighter and a little smaller. It also a little cleaner on the back side, a little less draw is coming off of it.

Any time you want to do tiny work, or precision work, or you're just getting started again; you'll want to put a new tip in it.

Make sure your voltage is set right and make sure your air pressure is set right. It makes your metal cutting tool work a lot better.

See you next time.

Watch more videos now