sheet metal workers weld ducting and all sorts of sheet metal but they also weld the supports that hold the ducts so it could be a sheet metal test , a thick plate test, or both and it you will probably be required to take different tests for every different job you work that requires certification....

you cant weld aluminum with aluminum bronze. i just cant picture it working.

let us know if it does,

thanks for posting,

jody

a rule of thumb for amperage settings is 1 amp for every thousandth of thickness up to a max of about 250. this is just a ball part figure and there are lots of exeptions, but this rule will get you in the ball park. using carbon steel as a benchmark, stainless needs less amps, aluminum needs more. ...

http://content.lincolnelectric.com//pdfs/products/navigator/im/IM243.pdf here is a link to a manual for that big dinosaur. its not as complicated as you might think. you have the amperage range selector that gets you in the ball park..(use 1 amp per 1 thousandths of thickness as your ball park figu...

sticking with a tig torch is not something you would want to do routinely but here is an example of how it could come in handy... lets say you are on a job site welding 2 inch stainless pipe and you need to weld a small piece of angle iron for a temporary support and you are up on a scaffold... you ...

I agree with Brian, not a problem...its done all the time.

jody

i have used vaseline before with good results too. we can get it by the tub where i work. , i just make sure to burn the excess off before i weld anything important. I am curious about how you like living in New Zealand other than being in the sticks and not being able to get all the conveniences. t...

I will be posting a youtube vid or 2 within a week with some preliminary results on the everlast 250ex.
so far so good... . I ran some pulse on aluminum yesterday and played around with the ac freq.

jody

I am sure you will find a use for the Lincoln V155S no matter what else you add later on.
if you need portablity, then you will be glad you got it. If you dont need portability, I like your idea of buying the exact machine you are familiar with.

jody

if you do it right and cut the screen just the right size where it will wedge and fit snugly in the cup, it will work.

here is a page where i did it with a #12 cup on a wp20 torch...


http://www.weldingtipsandtricks.com/wel ... nless.html

good luck,

jody

mig brazing seems to be the equivalent to tig brazing using silicon bronze (sil-bro) filler metal. Usually silicon bronze wire is used which melts at a lower melting point than steel. inevitably, some melting of the steel happens. ...just like when you tig steel with sil-bro. if you are careful, you...

thats what i do. I use a Y with valves coming from each flowmeter on each tank... its best if you have check valves on each side too.

good luck,

jody

Ok Claude, if you are following this, the box is on the page and waiting for you to tell your side of the story about virtual welding training.

let er rip...tater chip.
go here and post it....http://www.weldingtipsandtricks.com/wel ... lator.html

jody - wtt

a good starting point would be around 100hz for frequency, balance set to about 65, and amperage on around 150 and adjust with foot control, torch gas no more than 15 cfh with a #7 cup, if you can get some 50/50 or even 80/20 helium / argon mix, that will make a big difference but its not absolutele...

@ 55 amps, it sounds like a smaller electrode and a smaller filler might help. keep a tight arc, dont fart around, get in , get out. building your amps really slowly will only let heat build up too much. you need to light up, get a puddle, add some rod, and start moving all within about 3 seconds. g...

Hello Claude, Sorry I had to let you go abruptly on the phone. I will create a box for you to post your thoughts on the virtual welding training page http://www.weldingtipsandtricks.com/welding-video-virtual-simulator.html later today. you can post anything you want on that page, but it wont go live...

thanks buddy, we try.

jody

Ben, get some straight argon for your tig welding. the ar/c02 mix is only for mig and sounds like your main problem.
10 amps should be plenty low enough to weld without holes on 20 ga.

thanks,

jody

I use alladin 3 in 1 zinc aluminum brazing rod for tig welding pot metal. Unless its really thick , a 1/16 or 3/32 electrode is enough. I use 2%thor. I taper it and let it ball however it wants to. When it starts to flow good, I get off of it and let it cool for a minute. I have found with pot metal...

welding stamped steel depends more on the kind of steel than the fact that it is stamped. Most stamped steel products are made from plain carbon steel and welding it is no more difficult than plain carbon steel that is not stamped. other factors like zinc based coatings etc. on some stamped steel pr...

Thanks for the feedback. That is some sure enough useful info.

jody

Personally, I like the plain old sync 250 better.
The DX seems to have a little softer start at low amperages for really thin stuff but not enough to make a big difference.

jody

Are you feathering both ends of each tack with a grinder? That is the key for me. Then when you tie in you actually keyhole well into the tack before it closes up and things look slick on the inside. when you light up on a tack after you feather grind it, start back on the unground part and ease int...

This link might help you figure it out

http://docs.google.com/viewer?a=v&q=cac ... CUdxfhPPNw


jody

309 is the most commonly used filler for welding carbon to stainless. and is good to have on hand when porosity rares its head on carbon steel.
for some non critical apps, 308 will work....but I would use 309

Jody