Direct-die WCing! Cheap and easy.

[fallwind]

Yep, add a hose barb running from the inlet to the die on that diagram and that's exactly how it was. The core was getting hit hard by the water, but there's just not enough surface area for the water to absorb the heat.

I think soldering a small ramsink to the core would do wonders. Something with alot of surface area, like this: