LED Group buy!
- Thread starter that0neguy1126
- Start date
That may be a sign they didn't use flux. Other signs are that the solder balls up instead of spreading out, and cold solder joints (the LED lead and the heat sink don't have a continuous solder joint between them).
Sloppy or excessive solder definitely makes a difference with the lenses. Flux will allow you to use less solder and reduce the time you need to make contact with the soldering iron. You can fry the LED if you take too long to solder. Pre-tinning your wire ends also cuts soldering iron contact time.
Sloppy or excessive solder definitely makes a difference with the lenses. Flux will allow you to use less solder and reduce the time you need to make contact with the soldering iron. You can fry the LED if you take too long to solder. Pre-tinning your wire ends also cuts soldering iron contact time.
I agree - their solder jobs weren't too high quality - no flux from what I could tell. Since I'm using solid core 20 ga (thermostat wire actually; nicely has 7 different colors so that I can track my different circuits!), I don't pre-tin, but I find a dab of flux on the wire before I touch with solder on the joint itself does excellent.
Pre-tinning is for stranded or braided wire. Multi-strand wire acts like a wick and heat sink during soldering, so pre-tinning makes it act more like a single strand wire. Regardless, flux is always a good idea any time you solder.
The advantage of stranded wire is that, compared to a solid wire of the same gauge, the stranded wire has a lot less resistance to current flow.
The advantage of stranded wire is that, compared to a solid wire of the same gauge, the stranded wire has a lot less resistance to current flow.
Ok so here is the spreadsheet for the 2nd order. Waiting on Felix to confirm, but I should be placing the order tonight.
https://spreadsheets.google.com/ccc...S1EX3E0ZXltMmNBQTdGdkE&hl=en&authkey=CKfm4_4I
Also Clayton, I took out the Pots for you, since it was only you ordering, it would of been like $25 in shipping, so it will be much cheaper to just get them from radioshack, or an online store like digikey.
https://spreadsheets.google.com/ccc...S1EX3E0ZXltMmNBQTdGdkE&hl=en&authkey=CKfm4_4I
Also Clayton, I took out the Pots for you, since it was only you ordering, it would of been like $25 in shipping, so it will be much cheaper to just get them from radioshack, or an online store like digikey.
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