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Thread: How does one remove dielectric coating from S O L E N inductor leads?

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    Member jbljfan's Avatar
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    How does one remove dielectric coating from S O L E N inductor leads?

    I recently ordered a pair of inductors for a specific value that are made of twisted wires that are covered with a dielectric. My first inclation is to burn the coating off and then abrade them. Am I close to the proper way to prepare then for soldering or crimping?

    Regards,
    Mike
    senior member someday

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    RIP 2011 Zilch's Avatar
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    I carefully scrape it off with a utility knife, then tin with solder....

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    Senior Member Steve Schell's Avatar
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    Hi Mike,

    If the inductor leads are solid copper magnet wire, then carefully scraping off the insulation with a single edge razor blade should work well.

    Some of these modern insulation materials are a bear to remove, like the insulation on some copper clad aluminum wire I use to wind voice coils. I tried using a razor blade, but the scraping removed the copper coating and the aluminum wire would not tin. I finally began using a somewhat dull knife, which removes the insulation with effort but leaves the copper intact so the wire accepts solder easily.

    I have not had good luck with burning off insulation, as it tends to oxidize the wire and leave a stubborn residue.

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    Senior Member soundboy's Avatar
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    Sharp knife on edge works great....then tin with solder...

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    Obviously... not a golfer grumpy's Avatar
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    emery cloth (on solid copper) can help clean up the residue that's sometimes left
    after using a blade. -grumpy

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    Member jbljfan's Avatar
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    Thank you gentlemen

    With six strands per lead scraping CAREFULLY and then abrading is the way to go, followed by tinning.

    Mike
    senior member someday

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    Agreed. Scrape away with a razor blade.

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    Member ralphs99's Avatar
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    Hi Mike,

    Please also be aware that the polyurethane coating on some types of enamelled wire can decompose to produce toluene di-isocyanate with heating. Nasty stuff! Suggest you avoid breathing the fumes produced when soldering.

    Cheers, Ralph

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