Joined: Feb 2012
Posts: 19,344
Likes: 5,461
From: Rochester, NY
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
It seems to me that the majority of OA torch guidelines are based on far thicker material than bikes use and seem more welding than brazing focused. I generally use a flame far less intense than what a "no soot light at light up" amount would produce after then opening the O to a neutral flame. Once my A is lit I open the O a bit and lower the A, then jiggle both valves to balance the flame size and it's neutral condition. Most of my small bit brazing is done with tip diameters between .025" and .037". Andy
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AndrewRStewart