So gave my oxy/map a go little while ago today as a practice.
just got an of-cut of 16mm and a flat bit of copper and stood it up and just hit it with a good flame with 1/2" feather.
I was so amazed how well it pooled and moved with the heat once up to temp and how much heat it actually packed in what doesnt look like much but is, blows soft solder away IMO at the moment. Going to use white out next time and see how that goes. had a pinhole in it when i finished and hit it again and it closed up easy as :-D
My first attempt
2016-09-04 18.27.25.jpg
Couple of questions though,
when brazing does it help to clean the joints with some sand paper or something like with soft solder?
and i know people say you dont need flux with copper to copper and i did not use any this time or when i do flange rings but is there any benefit for it with flux on copper to make it a little easier or is it just a waste of time and money?
and lastly i used 2% a while ago on rings for flanges and switched to 5% (used this today also) and saw a msssive difference in how easy it was to use compared to the 2% on the swivel map gas torch. Does the silver % matter just as much now i have the oxy/map kit with the high heat?
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