solder in a syringe question. help needed.

[dean thom]

hi all,

ive just bought an etched nickel silver kit that requires soldering. some of the parts are pretty small and the manufacturer suggests using solder in a syringe for accurate placement. he also suggests using two different temperature solders (179 degrees and 145 degrees IIRC)... firstly does anybody know if i still need to use flux with these solders in a syringe and secondly do any of you guys know an online source where i can purchase both types at once?

regards. dean

[Malc]

Have a look at the Farnell's web site. They do most things :- http://uk.farnell.com/multicore-solder/sn62ra10bas86-25g-syringe/solder-paste-62-36-2-179-deg-25g/dp/149968

[EtchedPixels]

My usual approach is to solder the big bits then glue the small stuff on. It has two advantages - it's easier and more importantly if offenders the "purists" 

You can get solder paint, solder paste in syringes, different temperatures etc, plus the tools you need to use it (good temperature controlled iron, gloves etc). Other thing to watch is that the solder pastes are generally classified as hazardous waste so are fun to dispose of.

C+L Finescale should have everything you need and can probably advise in detail.

The only thing to watch if gluing the small bits with superglue paste or similar is that you have to do it after all the soldering, or it'll both come apart due to thermal stress and emit bad fumes.

Alan

[MikeDunn]

the manufacturer suggests using solder in a syringe for accurate placement. he also suggests using two different temperature solders (179 degrees and 145 degrees IIRC)... firstly does anybody know if i still need to use flux with these solders in a syringe

Can't help with an on-line supplier (sorry) as I get mine at the larger shows; but the stuff I get has flux mixed into the paste.  You can use more, but one of the points is that you use just enough for the joint; adding extra flux won't help it any more than it does already.  Also, be aware that this type does have a shelf life on it - there is a 'dispose by' date of around 12 months from manufacture.  Buying mail-order will increase the odds you get a tube that has a short life ...

Mike