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Originally Posted by wonwinglo

Useful tip that Ken,sounds a little similar to the older Flux pastes,dont forget to neutralise the acid content of these solder pastes,to do this mix up some bicarbonate of soda and apply with a stiff brush,then flush the joint with running water,this will get rid of the harmful corrosive qualities of all these types of fluxes,otherwise suddenly one day you could find the joint badly corroded.
Someone once did a field solder paste,all that you did was light a match and offer to the joint for a swift temporary repair.Hobbies of London used to sell the stuff.

I still have a card of Multicore Emergency Solder [melts with a match] in my work box :coffee:

On the topic of Solder. I have a question for all of the learned fraternity. About 20 years ago i bought a 500g reel of flux cored solder. Can anyone tell me the shelf life I should have expected please? When I went to use it on Thursday, when making a joint (silicon wire/solder tag on a motor) there was a black gungy residue left and no solder = no joint Changed the solder for a 25g new packet Result The joint was sound. Unfortunately me being an Aberdonian I do not want to just throw out this old ree. So if anyone can give mae a little advice I would really appreciate it.

thanks

Jim :music_too :music_too

Originally Posted by BigJBB

On the topic of Solder. I have a question for all of the learned fraternity. About 20 years ago i bought a 500g reel of flux cored solder. Can anyone tell me the shelf life I should have expected please? When I went to use it on Thursday, when making a joint (silicon wire/solder tag on a motor) there was a black gungy residue left and no solder = no joint Changed the solder for a 25g new packet Result The joint was sound. Unfortunately me being an Aberdonian I do not want to just throw out this old ree. So if anyone can give mae a little advice I would really appreciate it.

thanks

Jim :music_too :music_too

***Well Jim in my toolbox is a very old tin of Fluxite ! the contents are discoloured and gungy,but the paste still seems to work,however who knows the shelf life of some of this material as you say ? it could be that there has been some reaction within the solder to make it do that ? as these things are acetic/acid/caustic based products that work chemically when heat is applied it could be that those qualities have been destroyed with time,try using a piece further on within the coil to see if that does the same ? just a thought.
Failing that it will make some useful ballast weight ! :poster_oo

Originally Posted by wonwinglo

***Well Jim in my toolbox is a very old tin of Fluxite ! the contents are discoloured and gungy,but the paste still seems to work,however who knows the shelf life of some of this material as you say ? it could be that there has been some reaction within the solder to make it do that ? as these things are acetic/acid/caustic based products that work chemically when heat is applied it could be that those qualities have been destroyed with time,try using a piece further on within the coil to see if that does the same ? just a thought.
Failing that it will make some useful ballast weight ! :poster_oo

I am using a solder flux which looks like axel grease in colour but there are no problems with the joints other than my own.

Thanks for the input so far. Ballast.......hmmm now there is an option. I'll let you know how the inner part of the reel fares. if no bettere then ballast it will be.

cheers

Jim

Good new, I cut the first foot off of the reel and it workrd soooooooooooo..... much better. Still a little gunge and once again I cut off another foot and this time no gunge. I guess I'll be looking for ballast elsewhere

cheers

Jim

Originally Posted by BigJBB

Good new, I cut the first foot off of the reel and it workrd soooooooooooo..... much better. Still a little gunge and once again I cut off another foot and this time no gunge. I guess I'll be looking for ballast elsewhere

cheers

Jim

*** I think that we will put this one down to 'Deterioration of the extreme sections of material caused through exposure to climatic and molecular changes in the physical & chemical properties of soft metals' !!!