I believe that means that he has a machine which will allow you to set differeng amperages for the positive and negative sides of the ac waveform. Jody showed one of those machines in a video recently. This is correct. The dynasty 350 allows you to independently change the en and ep sides of the ac...

I would definitely drill the ends of the cracks before welding. Cracks tend to continue unless you drill the ends. If you're sure it's stainless that should be all you have to do and groove it out. Check to see if it's magnetic and also do a spark test if it is magnetic to figure a rough idea of how...

This is a very cool post! I have never welded copper but I would love to learn. Will be following this post closely. Hopefully someone has some advise that helps you out!

Hey all, first time poster here. 5 year welder/fabricator. All self taught. Had a project come to me, it's an exhaust manifold, constructed of cast stainless steel. I've attempted twice now to weld a crack shut. I've cleaned "v"d, wire brushed it. The only thing I have not done is preheat...

motox wrote:pulse?
craig

No pulse. I used 200 en 115 ep balance of 60 and frequently of 100

motox wrote:and two hundred of them, holy crap.
awesome
craig

Was a nerve racking couple hours of welding lol. Had to focus really hard

zank wrote:Beautiful!

Thank you! Not sure it's on the same level as your work! Love seeing your bike frames!

LtBadd wrote:Nice work, what machine are you using?

I am using a dynasty 350. It is a part of this larger assembly we do for this company. Not sure it's exact use.

Had to weld up 200 of these on Friday. Was a good challenge. The material was .070 5052 and the hole was only .090 away from the edge of the hole and customer didn't want the hole to be distorted.

I have never used it but Mr tig did a video on it and it seemed to work well. I forgot what it was he welded but it was a rather long Crack in a cast iron piece and he didn't preheat and it didn't crack after welding. Seemed like pretty good stuff

You can accomplish that appearance if you pulse foot pedal as you dip and back off quickly after or use pulse function on the machine but I prefer to manually do it, I get better timing being in control vs a machine telling you when to dip.

Got them all done tonight. I fitted the adapter with a 1/16 gap, kinda like a socket weld, so there wouldn't be any shrinkage stress cracks. The first one didn't go great at first, the root cracked on me, so I had to grind it out and do it over. I figured out that dipping fast on the root works much...

Ok thanks guys, I guess I won't be threading a bolt in it from the sounds of it. I am going to weld it with er 70s2, since there will already be dilution from the mild steel bungs. I beveled the ends of the tube, so that I can get more weld throat, I will do a root pass and come back over the top wi...

Ya I went and got a 300 temp stick and 400 temp stick so I don't go over interpass temp, cause I will have to do 2 passes. They are 4 link bars, not horribly critical but still want to do it right. My concern about post heated that hot is distorting the threads. I disassembled the Hiem joint so I di...

Thanks guys that is the info I was looking for. It's so hard to find preheat temps for some reason.
Wish there was a chart out there. I will have to do 2 passes so I will watch interpass temp. Would you guys recommend a post heat or just let it cool down on its own?

Do you know what preheat to use?

Hey guys got 8 weld up 8 4 link bars to a mild steel bung. The tubing is 1/4 is wall 4130. I am going to put a bevel on the tubing. What preheat would you guys recommend for the chromoly? And should I tack then preheat or am I better off preheating then tacking and welding?

Had a run of 300 of these little 20 gauge 304 boxes to do today. Need to be water tight and full pen. Boss doesn't believe in purging lol used a block on the accident to trap the gas

You can use a 1-2-3 block set bolted at a 90* angle and run a nylon wire tie through the holes and around the pipe to hold it square. A small set of machinists v-blocks work well when used the same way. I made a set of X-blocks awhile back out of two pieces of heavy walled 1 1/2" angle welded ...

Two more ideas... one I only suggest cause it would look absurd... This might get you in there: http://www.amazon.com/TIG-Welding-Torch-20-25/dp/B00KB9WZKS/ref=sr_1_5?ie=UTF8&qid=1458160254&sr=8-5&keywords=extra+long+tig+cup And for the clown college solution, slide a really long glass ...

Scotch Brite pads for a decent job of removing paint

The tubes are threw tubes, so I was referring to squaring both ways. They had a square cut but that wasn't the issue. I ended up taping 2 squares, 1 on both sides, to each tube with the tube at the 2 inch mark on the squares. The pictures don't show it well but the tubes run threw the base and have ...

Hey guys. Been a few years since I have been on here but looking for some advice and this is always a good plave to turn to for that. Had to weld up this job yesterday. Tubes are 1.375inch in diameter and .125 wall thickness with a .250 gap in between, base is .080 aluminum. Tubes have to be welded ...

Its the little differences. Like being able to run 5cfh and still getting proper shielding on the samev weld, how long they last. They will work but some of the more name brands. Like I noticed when I switchex back to ck verse esab I could run my balance up about 10 more towards the dc en side than ...

Ya its his attitude that drive me crazy. He seems very cocky and well his knowledge seems to be pretty vast, I font say the same about his actually skills. Everything is perfectly clean and on a bench sitting down anf I have never been wowed that's for sure.I really like lances videos. He does real ...