Someone ever tried transplanting a brass baseplate into a Duncan?

[Teleplayer]

In transformer design, eddy current loss is normally modeled as a parallel resistance. Rather than adding a capacitor to simulate this effect, you would be better off adding a parallel resistor. It is basically the same thing as changing to 250k volume pot when using a SH-4 that some people find to be a bit harsh. Perhaps adding a brass baseplate to the JB would have a similar effect

 

[freefrog]

Whatever is the modeling of Foucault currents in transformers, they have a more complex effect with guitar pickups IME: they scoop the response on a limited bandwidth just before the resonant peak but they also shift it up in frequency and as I said, they introduce distortion. These effects can't be mimiced by a lower resistive load of pots, whose only action is to "round" a bit the resonant frequency.

Below are some attempts to modelize eddy currents (non limitative list). None of these models is based on a simple resistor...

https://guitarnuts2.proboards.com/thread/8441/new-model

https://www.tdpri.com/threads/physi...equivalent-circuit.846745/page-3#post-8531564

Granted, Helmuth Lemme did simulate the related effect with a resistor, but his model was involving an "imaginary split" of pickup inductance...

IOW and to come back on topic, lowering a tone control has not the same effect than mounting a pickup on a brass baseplate. IMO because IME. YMMV...

 

[freefrog]

I'm interested in getting rid of the static electricity but, uh, ...what is Downey ?

No clue. Downey sells metal so maybe they had some cleaning liquid related to their products. Or did BL think to the Procter and Gamble cleaner called Downy? LOL.

Seasoned designers often use strange solutions like this. My friend luthier did clean up guitars with a polish initially designed to refresh silver...

 

[Cynical]

As the LRC stuff evoked was my "idea of the moment" of how to simulate eddy currents thx to external components, it's still not quite the same in my mind than a simple RC filter like a regular tone control.
Now, with a Bill Lawrence Q-filter on the tone pot, it would be another story IHMO: that's almost the circuit that I've described to mimic eddies - and there's some irony in this, since the Q-filter was designed by the man who tried to avoid Foucault currents in his pickups. ;-)

Rather than ironic, it makes perfect sense to me -- a Fouctault current in a pickup is a defect from an engineering perspective, but like a lot of what us guitarists like, it's a case where an engineering defect created a musically pleasing result. Thus, creating a pickup that is free from the defect with a circuit designed to reintroduce its sonic effect in a "designed" manner is completely logical from an engineering perspective.