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19852 Posts in 1275 Topics by 5182 Members - Latest Member: charbuild March 29, 2024, 03:38:23 AM
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Breaktru Forum  |  eCigarette Forum  |  Modding  |  Topic: How Not To Make Solder Stick On Copper Outside Surface (for soldering 510 conn)
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Author Topic: How Not To Make Solder Stick On Copper Outside Surface (for soldering 510 conn)  (Read 4542 times)

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Online Breaktru

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There are commercial solder flow retardants, but these are NOT any of them. Here are some of the ways that goldsmiths use to prevent solder flowing.

Polishing Machine Rouge: Some people use a little rouge powder from the polishing machine dust mixed with a small amount of oil which works well. Jeff Demand of Toronto likes to make a heat the rouge until it melts and then paint it on.

Pencil Lead: a graphite stick or soft pencil will leave a barrier that solder won't flow across. Pencil leads also work to line up tube sections when constructing a hinge. Liquid graphite lubricant that can be found in for automotive supply stores can be used.

Scrap of Rubber: One can take a small piece of rubber (vulcanized mold chunk, a slice off a piece of an old torch hose etc) and, holding it in tweezers, rub it on the metal part to be protected while it is hot. The rubber melts on with a truly nasty smell (use ventilation) and leaves a brown slimy coat on the metal. This too works well.

Yellow Ochre: Old timers used yellow ochre with water. I find that it has a tendency to "bleed" into the flux and make the soldering problematic. It is somewhat better mixed with a little oil instead of water but I find it difficult to remove from the piece and do not use it.

Maalox® and "White-Out": Favorite is Papermate© correction fluid. There are solvent based and solvent-free water based versions. In my experience the water based version does not come off the metal after soldering as easily as the solvent based one. I like the solvent based one for this reason.

Offline CraigHB

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Kapton tape is often used in PCB assembly for that.  It's tolerant to about 700F.

Breaktru Forum  |  eCigarette Forum  |  Modding  |  Topic: How Not To Make Solder Stick On Copper Outside Surface (for soldering 510 conn)
 

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