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rtbcomp
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I've recently used Fry's with a very hot iron, the type you heat up with a blowlamp. Scratch the surface as you tin the steel and once tinned add more solder to join the parts. Clean off excess flux. Use as high a tin content solder as you can get.
I used to use some stuff called "Selflux" to tin steel, it looked like tin particles in a very aggressive flux that resembled treacle.
I used to use some stuff called "Selflux" to tin steel, it looked like tin particles in a very aggressive flux that resembled treacle.
brightspark
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just use powerflow its an acid flux and will solder stainless steel as well https://www.screwfix.com/p/fernox-p...Vp7ztCh02Bgb3EAQYASABEgI1YPD_BwE&gclsrc=aw.ds or any acid flux
wristpin
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Thanks, ordered.
Fazerruss
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What brand do you use and where did you buy it please?
I'm in the middle of a repair on a moth eaten BSA tank and was considering soldering some of the holes in delicate areas. In the past I used bakers fluid but haven't any left.
Seadog
Save the planet. It's the only one with rum!
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brightspark
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I use Bakers. However did a bit of "lead loading" on a 1940s car I rebuilt and was told to use solder paste. This is a mixture of solder powder and flux, very good for tinning the surface, was expensive then (1970s) and went solid in the bottle after a while so I wasted quite a bit. The "special" flux for stainless is mostly phosphoric acid, so I'm not surprised it worked for Fazerruss.
graffian
Seer unto the end of his beard
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I would have used Bakers but didn't have any, however I have some 82% phosphoric acid[from ebay]. I used it neat for soldering.
I was expecting to have to dig out the old lump of copper soldering iron, but a 45W Weller was man enough to do the job!
As for proprietry fluxes. I have soldered to steel with Bakers, laco plumbers flux and the stuff in the tin with a picture on the top of a lord of the rings elf waving a soldering iron around. I don't know if the last one doesn't work as well but I don't like it.
rtbcomp
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Fry's Fluxite. I'm not it's greatest fan but I have a tin that must be 30 years and it works OK with a hot copper lump iron and a bit of scratching. Fine on clean copper. You must wash it off though.
ronan
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Would you not tig weld the holes up instead ? I don't know if i would trust solder in a tank, especially with the muck they add to the petrol now.
Barking Mat
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What kind of masks do you guys wear? Fathers suffering chronic chest infestions after years of soldering copper brass train kits. Be good present.
