WTDist wrote:Couple of questions though,
when brazing does it help to clean the joints with some sand paper or something like with soft solder?
Copper self cleans when up to dull red then left for a couple of moments to go black(cool). Only the worst lead based paint can be difficult but I guess you wont be using that shit. Some "sandpapers" leave shit on the join area causing grieff
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?
I do this for a living and only use flux when brazing dissimilar metals (brass to copper etc) cos it is a waste of money and flux deposits cause corrosion in the long term and/or hide defects in the short term
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?
bluc wrote:So for silver soldering(not soft solder) what flux do i need for copper to stainless?
bluc wrote:So for silver soldering(not soft solder) what flux do i need for copper to stainless?
hillzabilly wrote:Boc t45 silver brazeing rods come coated with flux.Will do copper-copper,copper-SS,brass-brass.Its all I use flows well without the crusty look after too.Not cheap but work very well.This bit has SS copper and brass done with the t45 rods.cheers hillzabilly ;-)
RC Al wrote:Errmmm. Carbon dioxide has 3x the oxygen content of regular atmosphere, it will only contaminate the weld further
Sam. wrote:RC Al wrote:Errmmm. Carbon dioxide has 3x the oxygen content of regular atmosphere, it will only contaminate the weld further
Then why can’t you breathe it?
scythe wrote:The CO2 is there as explosion protection, not weld protection, however CO2 can be used as a sheilding gas in MIG.
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