Itís a bit difficult to see in these pictures but I backgouged all the way around to meet the inside weld.† This is to ensure that I get 100% penetration on the weld.† I had not really cut the hole for the ring big enough so I really had a lot of grinding to do.†

I did buy some gouging nozzles for my cutter which probably would have been quicker but they haven't arrived yet, so I just got on with it the old fashioned way.†

Its awkward to see but I think the gouge is about 10mm deep.† This was because I didn't leave enough of a gap and so was forced to grind deep.† It took pretty much all day.

However, once done I was pleased with the results and it was easy to weld.†

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