Yup. Although, the metal used does make a difference (see
here for details). Nickel silver (German silver) is the preferred metal.
Also, for combining two single coils into a humbucker, you need to pay attention to magnet and coil polarity so that it actually bucks hum. ?
Here's a plan for those wanting to try make their own:
BTW: so many guys were mixing coils from the Duncan Custom and '59 to get the "Brown sound", that Duncan brought it out as a standard model - the SH-16:
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