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@Fishfabs
This is the Gas Fluxer set-up I have.
I did the brazing masterclass at the Bicycle acedemy a couple of years ago now and haven't used it much since - especially on steel. It works REALLY well with thin brass actually. I ususally TIG brass, but tried using the gas fluxer with Sif 101 rod and it was a dream. Perfect colour match with the sheet. Not sure if it was gas welding or brazing to be honest - it was melting the parent material, so assume it was gas welding... The little Harris torch must be what most people are using I guess.
I've also got this relatively high temp brass solder. I'm not sure if this is ideal for things like braze-ons as it could be running too hot and may compromise the tubes.... I used this to solder on the brake bridge, but the fit was so tight (milled) I think it also has some mechanical strength ontop of the solder strength.
Also a picture of the heat sinks. The one on the left (the pro looking one) was bought from FiveLand Bikes. They are doing some amazing work so snapped at one of these when I saw they did a batch. So many framebuilders I look up to, they are right up there for me and seem bloody lovely. I made a pretty crude seatpost heatsink from brass I had around. I'ts not very good but seems to have done the job. I'll need to improve this, especially if I want to add back-purging for TIG later on.
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