Re: Hotrails blender
Yeah, it works best with a 100K linear pot, IMO. Frank Falbo suggested that a reverse audio pot might be even smoother. You can find suitable pots on ebay, but you have to wait a couple weeks to receive them since they mostly ship from China. You can use a 250k audio pot, but it's going to behave more like an on/off switch than a knob unless you wire it backwards, where 10 is split and 0 is full (I think...).
I bought a three gang 100K pot and variably split three blade humbuckers with a single knob, and it's awesome. The pickups in question are DiMarzio Air Norton S pickups, and I wouldn't otherwise like on account of their being a bit too dark are saved by the fact that I can lift highs and drops the mids slightly with the spin-a-split knob, but still access the full output with a flick of the knob.