>>2906185
>how can I avoid tin-can effect?
figure out how to cross brake it. you can use a rounded over chisel blunt end to work along the line and deform the panel to give it some strength
pop riveting panels on works great. self tapper screws are good as well>>2906191
Sound like a pain.
It is not really a requirment to avoid tincan effect, but I'm curious if heating the galvanized sheet will reduce it enough,>>2894379
Noob here. I have some xp w CO2 but now I wanna learn stick. I have the dough but don't wanna just blind buy the most expensive invertor on market, just something good enough to not make learning process needlesly hard. What sort of machine should I aim for?>>2907096
Stick welding powersupply is just a powersupply with current limit function and OCV of 60-80V.
So even the chinkiest welder welds.
What would piss you off, depending on what you weld, is a hot start feature (temporary current increase on the start to avoid cold metal), since if you're dealing with 2mm and less steel, you'd blow it through. So maybe get a welder where hot start can be turned offI just got my 1st welding machine that uses gas, so I should probably get gas. What's the magical cheap(preferably cheap) way for me to get a used cylinder? Not necessarily opposed to sucking dick or robbing someone for it. I guess a q size would be good, I can easily move one of those around by myself. I have a guy by my house who can fill them but they probably need to be certified because he doesn't run some rinkydink outfit. I want to mig weld steel using my mig welder, the internet tells me I want 75% argon/25% co2, am I being bamboozled? What should I expect to pay for a used cylinder, preferably q sized? In southeast Michigan.I've just started my welding course (tig level 1, mig level 1 & 2, fabrication), the town I currently live in has dockyard so I guess there is a strong chance I may end up working with marine related welding however I was wondering on what other options are out there from the experience of Anons in this thread.
Could it be possible for me to get into working on huge ass machines and/or vehicle automation? Im kind of worried I will be told that I don't have enough experience and end up doing some small gigs like welding metal fence door brackets or something along these lines.>>2907152
a 20lb co2 tank from a soda machine or dope grow is usually under $50 used. co2 is fine for steel especially if you have a newer welder with adjustable inductance>>2907215
>a 20lb co2 tank from a soda machine or dope grow is usually under $50 used.
That sounds sweet. Can't find any on Craigslist. Found 2 50#ers for $400. According to the ad "THEY ARE STEEL" do they use the same regulator as other cylinders?
>co2 is fine for steel especially if you have a newer welder with adjustable inductance
It has a knob on it or some shit. If that's a feature of nicer welders it probably doesn't have it.>>2907248
>do they use the same regulator as other cylinders?
co2 cylinders should all have the same regulator connection but its different than an argon tank. co2 is CGA320 male thread on the tank. argon is CGA580 female thread on the tank. you can get an adapter for about $20 if you already have an argon type regulator
https://www.amazon.com/CGA-580-CGA-320-Adapter-Bottle-Dioxide/dp/B06WGZYD54>>2907255
I was hoping to swipe an old one from work, might have to piece it together. I know there are some old demand flow regulators with a 580 fitting that will never be used again and some typical regulators that were hard piped in with 1/2 npt. So of the other half of the 580 fitting is 1/2 npt I'm good to go.>>2907256
you can change out the inlet stems on regulators too. its just pipe thread
>1/2 npt
those may be low inlet pressure (50-150psi) regulators for manifolds and will go bang if hooked to full tank pressure. tread carefully>>2902699
>but what about the electricity?
The bolt is resting on a metal surface, which is grounded. the fingers are there to hold the bolt steady while welding.>>2907285
It's high pressure stuff, the nipples they thread onto are sch160 or xxs. It's a stupid setup, it looks like some engineer figured out the absolute cheapest way to do it but they do have some old regulators lying around, they swap the whole assembly if the gauge lens gets damaged.>>2907341
>3k psi piping system
thats impressive overkill. sounds like a cya big company decision to avoid the liability of minimum wage monkies handling gas bottles on the floor

/wg/ Welding General

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