![]() 01/24/2019 at 21:57 • Filed to: None | ![]() | ![]() |
*Miatafications intensify*
Now where do I find scrap metal to practice on....
Also, any tips? Anything to keep in mind? I set the welder up today and hope to find time tomorrow to start practicing.
![]() 01/24/2019 at 22:09 |
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I bought my own welder last year and have been doing a lot of work with it. Be patient. Welding sheetmetal is the trickiest thing - it’s really easy to blow holes in your work because the metal is thin. Practice on scrap sheetmetal before you do it on the real thing. I ended up building my own exhaust system - that was a little easier because the metal gauge is thicker. Totally worth it. I’ve only had a few posts, if you can go back through my recent post history you’ll see the exhaust I did, and rusted floor pans I rebuilt at the same time.
![]() 01/24/2019 at 22:16 |
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Harbor Freight?
![]() 01/24/2019 at 22:28 |
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Indeed. It SAYS it can weld 3/16 steel. Wonder if that's accurate
![]() 01/24/2019 at 22:29 |
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I remember those! Exhaust work is on the list. 99% sure there's a hole in either my header or downpipe
![]() 01/24/2019 at 22:33 |
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Ooh yay! I’ve been seriously pondering this purchase myself! Did you do much research before landing on the HF model? I’ve been considering getting one of those or biting the bullet and getting a Lincoln 180 from Home Depot or somewhere.
![]() 01/24/2019 at 22:44 |
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auto dimming helmet, clamps, 2 magnetic welding squares(don’t let the name fool you they are actually triangles) and welding gloves.
And this is flux core so you want to drag your weld.
I use 2 grinders, one with grinding disk and the other a sanding disk. Before and after the welds ( flux core welds leave boogers)
Practice, and get ready for some trips to the breaker box.
![]() 01/24/2019 at 22:46 |
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awesome. I’d be doing the same if I had a garage. I want to fabricate a custom center console for the Queen.
Also, ask Everett Metal Supermarket if they have any leftover scrap you can practice with.
![]() 01/24/2019 at 22:49 |
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A good auto-darkening mask is well worth the cost. Wear long sleeves and pants (and sparks will find their way down your leg if the knees have holes; this is droplets of
molten steel, not grinding
sparks so they hurt
). Be considerate if there are other people around; make sure they know when you’re about to start welding so you don’t blind them.
I am far from being what I’d consider a good welder, but have some experience. Youtube videos will help get you started with the basics. I’d suggest getting some plate and just laying beads on it for a while to get a feel for it, both pushing and pulling. Afterwards, cut up some stock and start sticking it together in different ways.
Clean metal before welding it, wire brush/grinder/whatever to get it shining, then de-grease. I like acetone; DO NOT use brake cleaner, the chlorine compounds that make it do its thing (in any residual cleaner on the part) have some sort of reaction with the heat and UV from welding that turns it into basically nerve gas that will kill you (if you’re lucky).
Being flux-core you’ll have more spatter and clean-up than a mig setup, but should be able to do structural stuff pretty well for sure (and sheetmetal if you’re careful and take the time for extra clean up afterwards).
Have fun!
![]() 01/24/2019 at 22:49 |
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Get the Lincoln 180.
![]() 01/24/2019 at 22:51 |
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The pictured machine is flux core only; the Lincolns that lowes/home depot carry I believe are mig machines, which let you do ‘normal’ mig under gas or use flux core (
gasless)
.
![]() 01/24/2019 at 22:52 |
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The “2 grinders” thing is huge, saves so much time.
![]() 01/24/2019 at 22:56 |
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I need a 3rd one for cutting disks
![]() 01/24/2019 at 23:03 |
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Zero research. It was on sale for $8 0 with an auto-dimming visor, gloves, welding squares, hammer, and a few other things included so... Figured it would be a good platform to lear n on
![]() 01/24/2019 at 23:04 |
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These days I work the die grinder into the mix. It’s slower for grinding stuff down but it works well for prep.
![]() 01/25/2019 at 00:38 |
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Practice, practice, practice... Once you’re getting pretty welds with penetration on scrap, then start whacking them with a sledge hammer after cooling. When welds start holding, you’ll know you can try welding on something that matters.
A lot of shops have scrap steel piles or bins outside in the parking lot for the taking. At the hydraulic shop, there was old dude in a 70's Toyota truck that went around to every shop in that area of Albuquerque once every couple of days and took whatever was out. Copper, brass and aluminium we kept inside and recycled ourselves a couple of times a year, followed by lunch and beers for everyone at Twin Peaks on a Friday afternoon, but scrap steel and cast iron wasn’t worth our time to load up and sell to a recycler for a penny and half a pound.
If you don’t have one, get a proper heavy duty extension cord and keep the run as short as possible. Welders aren’t happy with voltage drops. https://www.amazon.com/AmazonBasics-SJTW-Heavy-Duty-Lighted-Extension/dp/B01IN11PFQ/ref=sr_1_2_sspa?ie=UTF8&qid=1548393921&sr=8-2-spons&keywords=welding%2Bextension%2Bcord&th=1
![]() 01/25/2019 at 02:43 |
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Hmm flux is pretty irritating. Basically got to go over the area 3 times. The bummer is that the control is pretty limited so unless you are doing bigger structural welding you have a risk of blowing through the thinner stuff like sheet metal. Let me know if you need a lesson!
![]() 01/25/2019 at 04:49 |
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Never enough grinders.
![]() 01/25/2019 at 08:39 |
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got a sawzall?
head over to the junkjard pick up some scrap exhausts
cut em up and weld em back together
![]() 01/25/2019 at 09:18 |
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A few tips that I got that worked wonders with my flux core welding;
Thin wire, .030 unless you’re welding something very thick, and quality wire, I’m not sure about all of the brands, but I’m using Forney and it works well.
I was told by a professional welder that with flux core you push the weld, which has helped for me, but I see someone has said to drag it, so don’t hold me accountable for that one, it’s just something that worked for me.
Keep the gun a decent distance from the part, 3/4 ” -1 " or so. The shielding gasses come from the wire itself so the cone on the gun does nothing for you in terms of protecting the weld. Play around with what distances you like, but keeping it back a little bit has helped me see and control my weld better.
The cleaner the metal the better. At a minimum hit it with a flapper disc or sand paper and wipe it clean. Apparently don’t use brake cleaner, (oops, at least I let it fully dry so hopefully that helps? ), use acetone like others have recommended .
As always, practice practice practice.
![]() 01/25/2019 at 17:32 |
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So do you grind, then sand, before and after the welds?
![]() 01/25/2019 at 17:33 |
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Brake cleaner scares me
![]() 01/25/2019 at 17:34 |
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Not an awful idea. I'll be at a junkyard anyways....
![]() 01/25/2019 at 17:40 |
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I’m hoping to do more structural welding —shelving, thick brackets, stands, work vehicle additions —so maybe this will be a good fit? The plan is to wait until I’ve learned a bit more before attempting anything on my personal vehicles.
I would definitely like a lesson at some point!
![]() 01/25/2019 at 17:54 |
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I use it for most anything other than welding prep and painted things I want to keep nicely painted.
![]() 01/25/2019 at 20:01 |
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To play around with it may be nice, and if you end up going with a MIG later you will appreciate not having to go over your welds several times. It is going to teach you some weird habits, but in truth even MIG will teach you some not so good habits. Given your situation it may be more ideal though as the only real benefit to flux is that it can be used outdoor in the wind, and without a dedicated shop that may be a boon.
![]() 01/25/2019 at 20:15 |
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for what its worth... most beer cans are aluminum
just saying :p
![]() 01/25/2019 at 23:59 |
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All depends on what you are working with. Sanding wheels are great for painted or rusted metal. And the grinder is great to shape your pieces before you weld. You need to clean your weld with a metal brush fairly often too.
Then I like to clean up the rough with the grinder then I polish it up with the sanding disk before paint.
![]() 01/26/2019 at 13:33 |
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For sure, I meant get the HF version or spend more for a better unit. I won’t be using it often ... until I get it and realize how much I needed it lol
![]() 01/27/2019 at 20:00 |
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I said exhaust work was easier, but in reality only the welding itself was easier. It’s a challenge to create a good seal all the way around the pipe... that took some practice pieces to get the hang of, and I still had to seal up a couple holes on the vehicle, and in the worst places to reach of course...