Welding HELP, Please ???'s

Good point with the auto darkening. It's miles easier when you can see the workpiece before you go poking around with the electrode!
 
John Rebel said:
DA/O2 welding?

Dissolved acetylene and oxygen
Acetylene is pretty unstable as a gas so it's dissolved in acetone or some other fluid (I forget what though, you can Google it if you really want to know)
With auto dark, make sure you get a good helmet suitable for the welding your doing, cheap ones usually don't have adjustable lens plus, they are normally set for MIG welding (being blind means you won't be doing many of the things you did previously
 
AlphaDogChoppers said:
I am not quite sure why everyone thinks TIG is so hard to learn. I found it a LOT easier to learn than stick welding. (Again, that could be because I am well practiced at gas welding.)

I guess I'll have to 'go for it' as I do a lot of gas welding and may build a stainless exhaust for bike(s)
 
Main problem I have is initial set up, particularly since I got laid off (as you know, I have other 'issues' as well) ;)
 
Oxy/Gas welding is a great/cheap into to TIG. I however recommend a small 110 MIG unit with a shielding gas for home use. I've got a Lincoln 140 and though I wish I would've gone with a Miller, I really like it.
 
I was offered one of those today. Said 'make offer'
Any idea what it's worth (with a small bottle)
 
7018 on a stainless application? I've gotta see that!
I'd say TIG is the best option up to a certain thickness, adding helium for thicker stuff.

You could also run a MIG with stainless wire but the tri-mix gas is a bit expensive.
 
Geez This was made incredibly difficult for some reason. I have been a professional welder for 10 years. The smaller machines I have used for fences and car bodies were always always miller. 135 -140 amp machines are good enough to weld on some pretty thick material and right above being to cold to weld on anything. Hobart is just another name for miller for the most part.
You are gonna be in the 400 dollar range used but it is worth everypenny.

Run a fluxcore 035 wire so you wont have to keep getting bottles filled.
easy enough to be used by a 5 year old and holds strong as tig for our applications.
Get a spool adapter to run the larger spool so you can weld longer inbetween refills.
Then you can always get a bottle of the correct gas and run stainless or aluminum (with a push pull gun)
When you get some spare change get a 12' tweeco lead because you will wear out the stock gun rather quickly. If you are using it often..

Tig will take a long time to learn and it isnt cheap for a good peice of equipment
Stick is just better suited for larger higher amp projects.
 
bradj said:
i do it every day
Local 1032 boilermaker
But what do i know

I wasn't being flippant, I would really like to see that! I didn't know 7018 worked with stainless.
 
BoneDaddy said:
I wasn't being flippant, I would really like to see that! I didn't know 7018 worked with stainless.
ill dig up some ss and post pic of the weld it seems to run hot ill include machine setting
 
7018 will hold fine but is more prone to cracking and proper fusion due to dissimiliar materials
7018 will be the first point of deterioration due to rust
Whatever your opinion may be with your master king dong welding experiences combined---given the current context----why would you even think about it. Run stainless 308 or 309 rods and be done with it.
 
BoneDaddy said:
7018 on a stainless application? I've gotta see that!
I'd say TIG is the best option up to a certain thickness, adding helium for thicker stuff.

You could also run a MIG with stainless wire but the tri-mix gas is a bit expensive.
You don't need a tri-mix. Argon with low O2 or CO2 (i.e. somewhere around the 2% range) works quite well. Avesta Welding actually recommends it over the triple mix for 304 and similar steels.
 
mercuno said:
7018 will hold fine but is more prone to cracking and proper fusion due to dissimiliar materials
7018 will be the first point of deterioration due to rust
Whatever your opinion may be with your master king dong welding experiences combined---given the current context----why would you even think about it. Run stainless 308 or 309 rods and be done with it.

'Master king dong' welding experience? Is that a new certification I've never heard of? Sure would look good on a resume. :D

Seems to me that welding is a pretty broad subject and there's often more than one way to do it right. I, for one, enjoy reading about new techniques and procedures and trying them out for myself so the 7018 on SS is something I'll try out rather than just use 308 or 309 and be done with it.

Morgan: I've only ever used the tri-mix for stainless and can't get it at my current job so I'll give the Argon a shot. It sure would make things easier to be able to swap tanks and spools on my portable miller rather than pull the humongous exhausts off the snow groomers and bring them over to my TIG machine.
 
Basic Welding
Heat it til it melts, stick parts together, allow to cool - done
;D
 
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