ok I've said it before and ill say it again, I'm so noob its becoming ridiculous and I think the local welding supplier punishes the newer employees into serving me so they can deal with my stupid questions..... So i walked in and told them i wanted to back purge some 304 ss pipe I'm turning into an...

Thanks guys, that's pretty much what I thought, I just couldn't find the info. Cheers

Like the title says..... Why would I preheat a work piece? Is it something a back yarder like me would do if I'm welding up thin 3mm aluminium or is it more of a 3/4" thick "thing" Is it limited to alloy and exotic stuff or would you do it with mild steel and stainless? Lastly, are we...

Also I know the pics arnt the best that's because I had to get under the car to take them and the light isn't the best under there .... Might be because it's a bottomless pit were my money and time go, never to return again

So this is the job piece, the 4" 304 pipe slips into the flange really snug. I guess you would call it a lap joint; I'm using a 3/32 electrode with a #6 cup and gas lens @ 40amp with pure argon I've had arc wander before but this was beyond a joke. I resorted to making a puddle on the pipe, dro...

Thanks for the reply guys much appreciated, like I said in the op that I was rushed for time and literally had a hour to spare and couldn't take a photo as the part was tacked and bolted under the car.

I will take a pic shortly

Cheers

Hi, I was out in the garage earlier and had a hour spare so thought i would quickly tack some stainless exhaust together, the rate I'm building this thing is like a bend a fortnight so its taking forever but anyways.... one part of the job was to tack the 1.6mm 304 SS pipe to a stainless Vband flang...

Oh I now see the confusion haha. ONDGAS is my number plate on my race car...it's a Propane powered turbo six cylinder, and makes it easy to remember the million different sites that require a username. Thanks Otto, seems I'm screwed then! Being a beginner I'm finding fit up to be messing up my welds...

thanks for that, I am Australian so thats convenient!!! what i don't get is what happens if one leg of the bend is longer than the other? As you guys know mandrel bends are not always made to the highest tolerances which would basically mean that that tool-as good as it is-is pretty much useless, al...

Hi guys, I know its been touched on before but i can't seem to find a answer i "like" Im going to be cutting 4" stainless 304 pipe 1.6mm thick and i have a whole bunch of 90degree bends that i then cut down to make 45s etc. I find I'm having problems TIG welding because, well because ...

thanks for your time and reply Oscar and GreinTime,

how do you guys determine what size cup/lens to use and when to use a gas lens and when not?

Am i right in thinking its best to use the biggest gas lens possible given the room?

when is big too big?

You see. The thing I don't understand is on that picture you posted above, you can clearly see how you have started and stopped, but it's still very uniform, how does that happen? Obviously once you stop the material cools and wen you start again it changes again..... Yet how is there a uniform pudd...

thanks noddybrian, i never thought of welding it in short sections......so your saying this would halt the sugar? I didn't purge because of the cost factor and because i didn't think it would cause that much of a restriction to flow inside the pipe.And i tack a few sections at a time and so using co...

this is the finished part, as they say, good from far but far from good.

excuse the calendar its the only pic i had at the moment
like i said feel free to hurl abuse at me, any suggestions appreciated

Hi Guys, As I've stated before, I'm so "fresh" to TIG that you guys will prob roll your eyes at half the things i do and say but if i get one productive bit of abuse hurled at me ill be happy so here it goes; So I've had my Kempii 2300 TIG for a couple years now and I've always been meanin...

thanks for the reply guys i have installed it as per the user manual and its in 2T and HF. i just double checked and yes-to weld i need to press the torch and that gives me my low amp setting and then i can press the pedal to go from low to high amps. is there a chance this is normal? Its not an ori...

Hi I'm new to tig and pretty much know nothing, I've had my kemppi for a few years and have been teaching myself as I go to see me through each little project. I mainly use it to fab custom parts on my race car as I'd rather do it twice myself and learn along the way than pay to have it done. I'm ti...