Dave Plowman (News) wrote:

No - it's simply not the hottest part. But still plenty hot for the job in
hand and not so localised as the very hot part which has a name I've
forgotten. ;-)

The tip of the "inner cone"?

I don't follow that one, as my problem seems to me that for whatever
reason I'm not getting up to temperature quick enough!


The speed doesn't much matter.

It does if you take so long all the flux is gone, and the pipe has
started oxidizing in the air.


--
Cheers,

John.

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