Electronics > Beginners
Soldering tip melts
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mariush:

--- Quote from: Keosintal on February 02, 2019, 02:18:48 pm ---Yeah my choices here is pretty limited. Only 3 kind of solders are available to me:
1. Locally made with no label of information. This one produces shiny joint which I learn is good.
2. Leaded 60/40 rosin core. This one produces dull/matte finish which I learn indicates poor quality leaded solder
3. Goot lead free. I'm uncertain of the details because I never check it out since I always avoid lead free solder after watching YouTube and reading forums saying bad things about them.

--- End quote ---

Shiny means that it has lead in it.  Lead free solder typically leaves dull / matte finish.
So most likely that Leaded 60/40 solder is actually lead free solder with a fake label, or a leaded solder with a bad chemical composition (maybe 40/60 or made out of recycled solder?)

You don't say where you are... i suspect Malaysia from searching for "Burnley" in Google.

Anyway, can't you order things online? There are distributors which have reasonable shipping costs

See if there's a Farnell.com / Newark.com site for your country (or if there's distributors in your country) : https://www.farnell.com/
Same for RS-Components :  http://www.rs-online.com/

TME.EU may be worth checking out.
They're a Polish (EU) company which has very good prices for Liquid / Gel fluxes .. the ones made by AG Thermopasty are decent : https://www.tme.eu/en/katalog/#id_category=100484&page=1&s_field=accuracy&s_order=DESC
I wouldn't mind paying even 20$ for shipping, when I can buy a 500ml bottle of no-clean liquid flux for 10$  (10-20ml flux pens are usually that much) ... that would last you a long time.
They also have solder wire, but they only stock lead free solder these days (Stannol is a good brand in their catalogue).
 
Psi:

--- Quote from: mariush on February 02, 2019, 02:35:56 pm ---Shiny means that it has lead in it.  Lead free solder typically leaves dull / matte finish.
So most likely that Leaded 60/40 solder is actually lead free solder with a fake label, or a leaded solder with a bad chemical composition (maybe 40/60 or made out of recycled solder?)

--- End quote ---

Yep, could definitely be fake leaded that's actually lead-free.
Flux will also make a joint shiny though, It allows the metal to flow nicely so that it solidifies into a totally smooth reflective finish.
Keosintal:

--- Quote from: mariush on February 02, 2019, 02:35:56 pm ---So most likely that Leaded 60/40 solder is actually lead free solder with a fake label?

--- End quote ---
Might be, but I don't see the point of them doing that. And I thought lead free is more expensive? I can't tell the price difference though. The local brand and the 60/40 are sold in different weight packs and the local ones didnt even label the net weight so it's tricky to tell.


--- Quote from: mariush on February 02, 2019, 02:35:56 pm ---You don't say where you are... i suspect Malaysia from searching for "Burnley" in Google.

--- End quote ---
Good guess. And you're creeping me out now because my Google search result of Burnley didn't show Malaysian links.


--- Quote from: mariush on February 02, 2019, 02:35:56 pm ---Anyway, can't you order things online?

--- End quote ---
I can't for different reasons.
soldar:

--- Quote from: Psi on February 02, 2019, 01:38:22 pm --- Plumbers flux totally destroys electronics and iron tips.
--- End quote ---

My last house had solar collectors with a holding tank in the basement and some electronics which controlled the pump and other things. One day it stopped working. After much troubleshooting I found out that, during installation work, some plumber's flux had dripped into the electronics. It took some time to do its work but by now the PCB was totally corroded.
soldar:

--- Quote from: Ian.M on February 02, 2019, 01:05:46 pm ---
--- Quote from: Keosintal on February 02, 2019, 12:25:58 pm ---- I use Burnley soldering paste. It states on the package containing zinc chloride

--- End quote ---
That's a very aggressive acid flux, and is only suitable for plumbing and sheet metalwork.   
--- End quote ---

 I did not know the brand but searching online shows they make soldering paste for electronics so it depends on what he got.
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