Dear Experts

I am a beginner in this world and I did solder few things before but you count them.

Few years back I bought HAKKO F888 soldering station and the attached Multicore soldering wire was given free with the purchase.

http://imgur.com/a/X5FAjzX

I am looking to fix the lose battery wire on PCB for my millimeter and I need to replace a rechargeable 18650 battery on my Bosch-Cordless-GluePen same as the one below

:

https://www.bosch-diy.com/za/en/p/gluepen-06032a2000

If I need a do a good practice and do I need to get flux ? if so what type of flux ?

Thx

 

You don’t need extra flux. The flux is built-in in the core of the solder. Test the solder and your soldering technique by practicing on some scrap wires and circuit boards.

 

Noted MrChips
Thx for your help

 

Sometimes if you are soldering old wires or terminals that have heavy oxidation, it's helpful to add a small amount of extra flux to the joint before soldering.
Any rosin (not acid) flux will do.

 

Thx crutschow
Any good quality that is compatible with my soldering wire ?

 

Any good quality that is compatible with my soldering wire ?

Any rosin flux will be compatible.

 

Multicore soldering wire was given free with the purchase

The alloy is 60/38/2 (tin/lead/copper) and has melting characteristics similar to 60/40 solder. The next time you're buying, get some 63/37.


Extra flux helps in cases where there's any oily residue as on this yellow mini-grabber. A drop of flux helps with solder wetting (bonding).

This is what I use

I bought a liter in the 1990's for less than the price of the 2 oz bottle and the bottle is still almost full.

 

There are some situations, such as reworking a PCB or soldering large SMD ICs, where adding flux from a dispenser pen is useful and handy.

 

Although flux alone generally works, it is best to ensure the joining sections are clean , for e.g., some versions of one-off perf boards such as Veroboard can gain a slight film of oxiditation with storage.
It can often be restored by a vigorous wipe with a dab of flux on a polishing rag.

 

There are some situations, such as reworking a PCB or soldering large SMD ICs, where adding flux from a dispenser pen is useful and handy.

View attachment 365625

The advantage of that is likely faster wetting of the solder, thus less time to heat the IC.

 

Thx guys for your inputs and helps