spot welds
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NDT

Original Poster:

1,766 posts

284 months

Saturday 17th January 2009
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I'm about to start a bit of work on my Mk 1 - new A-panels, new wings...
Any thoughts on the best way of replacing the spot welds?
Just do plug welds?
I've got MIG and arc welders - can you get a spot weld attachment for an arc welder, and are they any good?

Cooperman

4,428 posts

271 months

Sunday 18th January 2009
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I always just plug weld using a MIG. I dril holes about 5 mm in one of the panels then clamp them together, or fix them in place with self-tapping scr4ews. Then I just weld through. \finally I remove the screws and weld up those holes.
Remember, before removing the old A-panel, take an accurate measurement across the door frame and from the gutter down to the centres of the hinge holes on early cars. Check these dimensions before finally welding the new panels in place.

Peter

guru_1071

2,768 posts

255 months

Sunday 18th January 2009
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those spot weld converters for arc weldeders are nothing more than someones idea of a practical joke! they probably have some use in heavey duty industrial work (bit like the arc welder), but are of no use in bodywork.

do as pete suggests and plug weld it using mig, you could borrow a spot welder, but to be honest i hardly ever use mine unless its a very very decent car, you have to be very clean and tidy with one, and the qty of different arms to get all the correct welds are very expensive. from memory the spotter i use and all the arms, and the sharpening tool was nearly a grand - with the arms contributing for over half of that.

if your doing a lot of work its worth buying one of those hole punch machines, as drilling stuff is tedious, i bought a set of ebay for about 30 quid with options of differant sized holes, its just a case of putting it in a vice, sticking a it of box on the handle to make it easier and punching a clean hole every couple of inches - far better than those crappy hobby punch/joddler tools that machine mart and the like offer.

NDT

Original Poster:

1,766 posts

284 months

Monday 19th January 2009
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thanks both.
Nick

Cooperman

4,428 posts

271 months

Monday 19th January 2009
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I'm about to go into the workshop to drill out all the 5mm holes required in the RH outer sill! B****y loads! In fact, I drill holes in the door frame flange back to the 'B-post' to minimise the 'uphill' welding. I was welding 'uphill' on Saturday doing an inner sill repair and got a bit of weld spark in my ear. I said "Oh dear me", quite loudly (or something like that!).

NDT

Original Poster:

1,766 posts

284 months

Tuesday 20th January 2009
quotequote all
Cooperman said:
I'm about to go into the workshop to drill out all the 5mm holes required in the RH outer sill! B****y loads! In fact, I drill holes in the door frame flange back to the 'B-post' to minimise the 'uphill' welding. I was welding 'uphill' on Saturday doing an inner sill repair and got a bit of weld spark in my ear. I said "Oh dear me", quite loudly (or something like that!).
I can imagine! You might even have said it more than once...