Electronics > Beginners
Removing enamel from coated wire
Buriedcode:
I've repaired quite a few headphone cables and they almost never have "solderable" enamel on them. You can buy solderable enamel magnet wire, but I haven't seen it used in headphones.
I used to burn the enamel off then clean with fine grit sandpaper.. but now I just use ~200 grit sandpaper. Two or three passes and its done - the rest does seem to come off during soldering. Thankfully its such a thin layer it doesn't take much, but as the wire is also so thin, go easy.
David Hess:
I have a big spool of roughly 28 gauge solderable enameled wire so it does exist. It is very red looking compared to typical and 700F burns the enamel off in seconds. I use it for point to point wiring when I need something better than wire wrap wire and there is no need for color coding.
KL27x:
^I bought a spool of solderable enamel wire, 28 gauge. It, too, is very red.
Despite the packaging says it is solderable at 300 degrees, I can't tell the diff between it and any other small gauge transformer wire I've ever used. Yeah, it is solderable with an iron, but it's neither clean nor easy. Hotter temps, longer dwell times, and propensity for cold joints.
langwadt:
--- Quote from: KL27x on July 29, 2019, 11:04:48 pm ---^I bought a spool of solderable enamel wire, 28 gauge. It, too, is very red.
Despite the packaging says it is solderable at 300 degrees, I can't tell the diff between it and any other small gauge transformer wire I've ever used. Yeah, it is solderable with an iron, but it's neither clean nor easy. Hotter temps, longer dwell times, and propensity for cold joints.
--- End quote ---
I've never had problems with it, sticking a fresh cut end into a blob of solder on the iron works a treat
Psi:
If anyone wants to source thin enameled wire where the iron burns off the coating look for wire that goes into a wiring pencil for PCB repair.
https://www.newark.com/roadrunner/rrp-a-105/wire-wiring-pencil-38awg-pk4-38m/dp/20J5555
http://www.farnell.com/datasheets/2575104.pdf
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