Wax Potted Pickups...

Some electric guitar talk.
What makes an electric guitar electric? It's the pickup.
In the early days, guitarists would attach a lapel microphone to the sound hole on an acoustic guitar. It was good for recording or a low volume setting as any volume loud enough to accompany a singer or band would cause feedback from the microphone to the speaker.
With a guitar metal string guitar, a coil of wire and magnetic was devised to use as a pickup. Typically, it was a single coil and later, dual coil pickups were invented for a different sound.
The wire used was as fine as human hair and it took several hundred windings to create a pickup. In a loud playing environment, the coil wires would sometimes buzz and some pickups were slightly microphonic and picked up all sorts of non-musical noises, including feedback at loud volumes. Vintage guitars typically have this style of pickup and other have what's called 'wax potted pickups'
The wax process involves dipping the pickup into a bath of hot wax (usually paraffin and beeswax mixture) of about 140 degrees Fahrenheit. After a few minutes of soaking, any air bubbles will escape. When you remove the pickup to cool, the wires are encased in wax and no longer affected by vibration.
Some guitarists say the treatment reduces the bright high sound and gives a more mellow tone. Most of the video examples I've seen showed little difference.

There are a handful of videos explaining the process and it's benefits.

I have an inexpensive violin bass that I'm considering potting the pickups on as it howls when I get too close to the amplifier.
The process looks easy!

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