How do you go about it? Most of mine look ok but there are a few untidy ones.

best to grind them flat and re-weld .m.

Alright. Easy enough

As long as the weld is ok, why bother? Most of them will never be seen when your car is dressed anyway.

Phil

if there out of sight and your confident they are strong you could leave them be.I'm a welder by trade so prob just fussy. m.

They are strong enough. I had to cut a couple of the untidy ones to fit the gearbox. Worked up a good sweat trying to cut them

Plan A is always grind off and re-welds but don't do too often otherwise you can weaken (through thinning) the underlying material.
Here's my plan B for sheddy looking welds:

Skim body filler over the welds, sand them smooth, spray with high build primer, sand, top coat.

The body filler goes into any crevises and generally smooths out the welds.

It also helps make black satin spayed bodywork look more like powder coat by smoothing out the finer detail.

Can't you just sand/grind off the excess? I mean if there's chunks sticking out like a big scab on your leg isn't it just like excess filler in a dent?

You need to lay your hands on some flap discs.
They leave welds as smooth as a babies

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I mean if there's chunks sticking out like a big scab on your leg isn't it just like excess filler in a dent?
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we arent making a garden gate here guys
those welds are all thats keeping your arse off the road!

quote:

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Originally posted by norm007
You need to lay your hands on some flap discs.
They leave welds as smooth as a babies

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quote:

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Originally posted by MkII
(quote)
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I mean if there's chunks sticking out like a big scab on your leg isn't it just like excess filler in a dent?
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we arent making a garden gate here guys
those welds are all thats keeping your arse off the road!

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quote:

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Originally posted by Daddylonglegs


You definitley 'gets what you pays for'

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Oooooh loving that flap disc action. Only troube is sometimes it's a bit TOO effective and the bit of metal I'm giving the flap love ends up being a bit marginal.... 1.5mm thick box section quite easily becomes 0mm

originaly posted by ninehigh
quote:
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Yeah I just meant trim them a bit... Surely a great big lump sticking up isn't going to keep your arse off the road
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the point i was making was that if your weld consists of big lumps sticking up you've got to ask if it was capable of keeping your arse off the road or should you grind off and start again.(I'm not having a go at anybodys ability to weld but in 20 years as a welder I've seen welds fail and you dont want that in a car that is probably going to be driven"enthusiastically" . m.

Even if there's no danger caused by a weld breaking, it'd be such a pain in the arse to sort a half buried weld in a built car, it's worth getting them right first time.

Summat like inside the tunnel or something. You'd have to strip half the sodding car out to get to it!

Cheers,
James

Flap discs are used much flatter than you would use a grinding wheel.

A sort of... "not so steep an angle, angle grinder."


Paul G