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Jon Elson Jon Elson is offline
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Default How do they put the flux in solder?

On Fri, 15 Mar 2019 16:37:20 +0800, Rheilly Phoull wrote:

On 15/03/2019 4:24 pm, wrote:
I have a box of 18 gauge solder that says it has 5 cores. Putting one
core in solder that thin seems impossible. and this has five. How do
they make it?


Google "Extrusion"


I don't actually know, but I'm wondering if it is done by starting with a
big bar and then rolling and stretching it, kind of like wire drawing.
It seems extrusion won't work, as that would leave the holes in the
solder wire empty. But, maybe there's a trick to it. The nozzles that
fill the holes would have to be REALLY tiny, and then hollow for the flux?
Seems like it would never work.

Jon