Welding Thread

lol im just messing wit ya... all of us learn....

and at flatlander now those are some bad ass welds!

Thanks! I have some others I'm not as proud of(done towards the beginning of the build)... but hell none of them have failed yet(boom06) The Jeep has 3000 street miles on it since I built it and a few wheeling trips(not as many as I would like though(jerkit)) so I'd say it's OK. I really need to build a tubing bender and then use that to build a cage... I've come close to flopping it a few times.
 
Anybody running a spool gun for aluminum off of a wire feed?

Seen the kits, but scared to waste my money. Sure would be nice to weld aluminum though...
 
Got a few more hours of practice in over the weekend. I think I'm pretty much set to weld 1/8" flat stock to 16 ga sheet, which is all I need for my current project. I hope to start on the RX-7 tonight!
 
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double pass and kinda on the blury side man
Nothing wrong with a double pass in certain situations but yeah, need to better see what's going on. I'll try to find my practice pieces (garage is a mess) and take some pictures tonight.
 
Nothing wrong with a double pass in certain situations but yeah, need to better see what's going on. I'll try to find my practice pieces (garage is a mess) and take some pictures tonight.

I forgot to ptu the question mark.. wasn't 100% sure or not. I can't really say crap as I have honestly never even atempted to weld but I'd like to learn.
 
Okay, so here are some of my most recent attempts. 1/8" flat stock and 16 ga sheet.

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I'm getting a good amount of spatter so I think I've got a setting wrong. Voltage too low? Holding the nozzle too far from the surface? I also think I was probably going a little too fast.

I also tried to fill in some holes in the floor of my RX-7 (leftovers after drilling out some spot welds) and while generally successful it certainly isn't pretty. I was constantly fighting between spattering and burning away material.
 
those are nice! what temp were you at? 120?
I'm not sure as my MIG doesn't have the actual parameters on the dials. Just 1-10 for wire speed and A-J for voltage. I think I may try to at least quantify the wire speed though. I'm not sure how I'd do that for the voltage though. But as far as the welds I'm pretty sure I had the wire speed set a little too fast for the voltage but judging by the heat-affected zone I may have had the voltage set too low. I also know I have a tendency to move the nozzle further from the welding surface so there's room for improvement.
 
Slow ur wire speed and go slower while getting closer. Should help your spatter...

Looks pretty good though!
 
well, i got out in the garage despite feeling like complete ass yesterday after work.

figured i would get out the welder and make sure i can still weld lol.
first off, some pics of my setup

power mig 140C(wish i woulda got a miller)
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its a little dirty. will be cleaned and serviced before summer
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my auto darkening welding helmet
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now onto some welds...

heres a decent pull left to right. using straight co2

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welding hot around the radius. notice the penetration marks that go almost and inch up the cylinder

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pretty

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heres an example of preheating with stitch welds...

this gets it hot enough so it sticks, but still doesnt have the penetration of a solid bead but keeps down warping on thinner material.

stitch weld on the right to a bead on the left..

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stitch welds look nice and are what most people are used to seeing when they think of a weld, but are not as strong as a good 1 inch bead. this is where preheating comes into play.

take your time when stitche welding, and like i said, it can be beneficial. make sure to do a complete circle and then puncture the weld. it is very hard to get right without making a giant growth out of the weld, but with practice and knowing ur machine, u can do "structural" welds like this...

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1/4" HR steel, .045 flux
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Another one
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1/8" HR steel flats. I'm not sure what caused the hole in the bead towards the right. First time I recall seeing that.
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These were some I did a while ago and were on C25 gas with the .023 HF wire the welder was loaded with when I got it. I don't remember the settings. It was just rusty scrap we had laying around; I was beefing up a utility trailer. I'm not sure what thickness they were.
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Scrap pieces from a current trailer, .045 flux again. The scratches are from the chipping hammer.
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You can see the penetration on the back.
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This is what you don't want to see, lol. This was when I first got my welder and was playing around with 1/8" stock. This is definitely a cold bead, you can see how much it's crowned up.
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YEE HAWW this is one of the "welds" (if you can even call it that!) that was done by a previous owner of the trailer. LMAO. As long as yours don't look like this, you're doing something right! :D
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bad cold welds, also done by a previous owner
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One wack with the sledge knocked this plate loose, never a good sign!
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