Originally Posted by
mudboy
John, how does Gasflux work? Does it completely do away with the need for paste flux application before applying flame?
At Trek we used paste flux in addition to the gasflux, but some people find just plain Gasflux works well, especially for fillet brazing. Here's a diagram of the set up:
It works best with brass. With silver, I found the bright green flame made it difficult to judge when the work was hot enough to melt the rod.
Followup (and I don't mean for this to be a thread derail), do you still use Oxy-Propane, and if so, could you give details of your setup? I want to buy my first torch after the new year and I'd prefer not to use Acetylene because it's so sooty.
No, I use oxy-acetylene now, without Gasflux (I do use Gasflux *paste* flux, though -- IMO the best flux on the market). Acetylene is only sooty until you get the oxygen properly adjusted. After that it's clean.