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Welding for MOT


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dvderlm

Still can't decide on a MIG welder. Display4top do a gas capable for £99 whose reviews aren't too bad. But a Blackline with Euro torch from RallyDesign is tempting.

 

Prepped with deox gel/clingfilm washed off with water and wire brush and Dremel the edges to clean metal. Ordered a magnetic clamping finger thing.

 

Anyway, here's today's mend with the Kelarc gun at 55Amps with 1.6mm welding rods re-attaching the rear tow loop so it doesn't wobble up and down!

Tried the spot welder but its carbon rod ain't long enough to reach.

Might spot weld from inside the boot.

 

This took 11 half rods, because of access.

 

I need a thinner helmet.

Focus not great, sorry.

 

IMG_20210328_163044_0.thumb.jpg.aa99b262b8dfd797f52017f65930e85c.jpg

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epoxy primer is worth the investment on a car you want to keep ....10x more durable than zinc182 

just the weld on one side should do it    grind it smooth ish and seam sealer it ...what they cant see they cant fail 

Ordered some grey epoxy 1K primer, not here yet.   Got the seam sealer applied in milder weather and covered again with zinc182.  It's flipping sticky stuff. Put some on other awkward s

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dvderlm

Prepped for some reinforcement.

IMG_20210405_123923_8.thumb.jpg.9ff776874429ad8ad5d58f9a72bd5148.jpg

Ready to tack

1715750061_IMG_20210405_141114_62.thumb.jpg.37fc4c788feedfeade272f5ecd3f20b7.jpg

Needs some grinding. 

 

Another repair plate where there was filler and Age Concern plastic bag.

1963035010_IMG_20210405_162601_16.thumb.jpg.552baa29c355d3ce4a0de836a0d937f4.jpg

Going to fill around this.

 

Blowing holes in the really thin rusted-the-other-side metal of the arch.

IMG_20210405_162629_1.thumb.jpg.9ababcd721d249eeec9d62c8e35ed483.jpg

 

Guess that needs even lower amps...

 

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mk2tastic

Repairing thin sheet steel is an absolute mare with a Mig, especially when it’s old and rusty, getting it clean is the worse thing.

 

I’m also forever twiddling with power and feed settings to prevent blowing holes in it.

 

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dvderlm

I can't go below 50amps on my arc welder, but at least I never have to fiddle with wire speed using the Kel-arc pistol and rods.

 

I had cleaned metal for the earth clamp right near to the back where I was working.

Maybe I'll connect the earth clamp to front of the car next time for a bit more resistance.

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steveo3002

did you decide against the mig?    im just a diy messer but my welds look way way more presentable than those

 

id still really strongly suggest looking into getting one if you can manage it  

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dvderlm
On 06/04/2021 at 14:16, steveo3002 said:

id still really strongly suggest looking into getting one if you can manage it 

Thanks for the advice.

Not too bothered about presentability so long as the weld joint has penetrated well.

When I have grinded I can go over it again if there are any holes, dry looking joint sections.

 

I'll pull the car by the tow loop with a winch as a test when I'm done.

Did once push it from behind about a mile back home with a bar hooked in that loop.

 

But anyway I relented and bought an invertor MIG that can do Gas, Gasless (fluxcored) with a Euro pistol,  or MMA with sticks  - or Lift TIG with a different gun. 

 

Still waiting for gas and regulator and 0.6mm wire to have a go with gas.

Some 0.8mm flux-cored wire on the way too. 

Think I need some 0.6mm tips?

 

The current can be set low for MMA (so I can try with the Kelarc until those arrive) and the volts and current is adjustable for MIG. Wire speed is automatic according to power. It even has different setting for CO2 or CO2/Argon mix.

 

IMG_20210409_144719_0.thumb.jpg.98dc1d7c199029e39c4778afd34ef18e.jpg

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Tried some stick welding with this new machine. 38amps will still arc with just a stick, but is happier with 70ish. There's a nice non-sticking to workpiece feature but it interferes with the Kelarc gun a bit.

 

Another repair plate

IMG_20210411_151114_1.thumb.jpg.a4fd82f96d3bfc0078db7229728f63e3.jpg

 

Stick welded and grinded a bit. 

IMG_20210411_180342_7.thumb.jpg.71b5f847dbea15d8fe625db7ba50020f.jpg

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