I agree, if you can go with a proper size mig wire and argon/co2 mix, that's the way to go. Gasless wires are not allowed here on auto welding for a variety of technical reasons.
I wonder how many micro cracks are in all of those tack welds?
I saw on one of the posts that getting a reasonable supplier of welding gases is a problem in Scotland, why is that? Are there not independant gas suppliers or is the market dominated by a 'Global supplier'?
Thankyou all for the info,
I used a Clarke TE135 mig with CO2/argon, I will have to check the wire thickness but it was supplied with the welder.... I was trying to do the type of weld shown in the video on here for thin metal techniques! But obviously wasn't over lapping enough.
The MOT stated 'excessive rust' withing 30cm of rear seatbelt anchor point.
I did search around for information on the thickness and would like to know what the loadbearing parts are on a polo.
It is definately a lot better than it was, and should have been picked up on previous tests as the hole had been filled with plastic padding.
So really I should grind back and re-do it?
I just know I can't do a continuous weld without blowing holes! (not yet anyway)
Just checked the wire and it'll have been 0.8mm. I'll get some .6 and start practicing!
I will take some more pictures as the photo.... taken in the dark with a flash makes the old filler look like rust!
Christ you're a critical lot!!!!
Keith
Well after grinding back there were only a couple of places where the welds weren't joined. I spotted the holes and did some more continuous welding on top......ground back and it looks a lot better.
Took it in Monday and it passed.... from talking to the guy tho I think the first attempt would pass most MOT places (without any gaps between spots)
Thanks for the advice all, I'm still fine tuning the settings but my thin work is much better.