TIG welding basics part 2 - polarity, asymmetry and why we weld aluminum in AC

[@scottsmith7080]

Instant subscriber. First time anyone has ever described the ac frequency cleaning action. Thanks.

[@heavymetal58]

Great explaining for a novice electrical stance. I think my daughter could understand it a little more. Waiting patiently for part 3.

[@321357w]

Very informative and educational, have learnt a lot in just Part 1 & 2. Thanks from Down Under.

[@Bigtwin88]

Great video. I started welding about a year ago a home and love it , but didn't know much. I been learning on my own , The wrong way and the right way. I learn from people like you. Thank you Don M

[@DoRiteFabrication]

The key is to just get out there, you have that figured out. The rest will come,

[@Bigtwin88]

Thank you.

[@JCMakerspace]

Great couple of videos on the basics of TIG.

[@trumpetman2006]

AvE shirt around 8 minutes. Awesome. Love the video, really breaks things down.

[@marksmith849]

Fantastic video. I haven't been welding very long. I've only welded steel a bit here and there but I really want to get into it now that I have more time. I really want to learn how to best use my everlast welder and get into some aluminum welding too.

[@melgross]

trumpetman2006 can’t stand AveE.

[@DougHanchard]

Thanks for explaining many of the important steps and tips for welding aluminum. It will help me dive deeper into the proper features a welding machine should have. I want to learn how to weld aluminum to fabricate and repair race car parts in my home shop.

[@terrycullen6290]

Great vid Jim !! You always seem to break it down to elements we can all understand. Many thanks & keep them coming

[@BuildSomthingCool]

Great video. This one I will have to watch moe then once.

[@Presscrete]

Awesome, you really do a great job of explaining it in a way that it's very easy to understand. Keep the videos coming. You even have a "AvE" fan next to you paying attention lol.

[@DoRiteFabrication]

I can't focus...FRAK!

[@mikenixon9164]

Good video Jim waiting for the next one .

[@ALWAYSPDG]

Great information about tig welding. You explained it very well and now I have a better understanding of how a tig machine works. Just purchased the Lincoln Tig 200. I have used a square wave 175 for many years. I need to contact you regarding my SW 175, I have experienced trouble getting an arc started when using the ac. Again, great information in your video! Mike

[@DoRiteFabrication]

A bad ground or a defective torch (high freq leaking through the torch lead) has been the most likely causes of difficult arc start in AC.

[@ALWAYSPDG]

I'll take a look at both of those issues you mentioned. If it is a bad ground issue, where do you recommend I look for that? Thanks for getting back to me. Mike

[@krazziee2000]

very good class, I learned a couple things from that one , thanks ,

[@zoebaby11ss]

enjoying your class series

[@DoRiteFabrication]

thank you.

[@WildmanTech]

Oooohhhh. I totally get it now! Square wave! Yesssss.

[@DoRiteFabrication]

The light over the head just came on. lol.

[@WildmanTech]

It DID! Thanks to your explanation. You know how many years passed before someone told me to keep the filler rod in the gas atmosphere? I used to be a grinder. Now I'm a welder because of that.

[@skeeterweazel]

Thx for explanation on asymmetrical square wave.

[@jauringer1]

Incredible Tutorial! Thanks for sharing.

[@DoRiteFabrication]

glad you like it.

[@melgross]

Pretty good presentation.

[@ZTFab1]

Great information Jim!

[@DoRiteFabrication]

Thanks, Nice cart at Bar Z.

[@ZTFab1]

Thanks! Already looking forward to next year.

[@survivalcomms]

Excellent !

[@DoRiteFabrication]

The one guy I know that could School me in AC theory...Bret Barker.

[@survivalcomms]

You got it down pat. I learned alot from these videos. I'm ready to go play with my welder now. I am jealous of your welding helmet.

[@johngibbs872]

Jim great video 👍👍

[@DoRiteFabrication]

Thank you.

[@toolguy6057]

Very informative!

[@tomherd4179]

Question about Square Wave on video. When the % of positive was lessened, yielding a more energy negative square the zero axis point moved to the left. I was thinking that would imply a change of frequency. I expected, before seeing the video, that the amplitude would have been reduced, but I think you are saying there is a time shift % where positive is lessened and negative increased within the same one cycle frequency.

[@DoRiteFabrication]

Correct, in reference to one complete cycle. Time, not amplitude.

[@tomherd4179]

Thanks for the fast answer. I follow your Channel faithfully and this "Class Series" is just icing on the cake! Great Job :-)

[@mceperformance8978]

The cycle is complete when the next positive event happens. So the frequency stays constant, even though the positive portion is shortened (the negative portion is lengthened by the same amount). Time is 1/f, (t= 1/f) so if frequency is 60hz, 1/60 = .01666 The wave repeats every .01666 seconds (or 16.6 milli seconds). Hope that makes things clear as mud... lol

[@DoRiteFabrication]

That is correct!

[@GarryFullerSr]

Great Video.

[@rubbersideup]

Thank you! just had a major hhhoo that's why moment!

[@DoRiteFabrication]

I've had a few of those....

[@bcbloc02]

I thought the solution was to get neighbors that liked to weld. :-)

[@cpcoark]

They will as soon as they need something repaired :-)

[@DoRiteFabrication]

I have awesome neighbors! All but one.....