The exposed copper sheets are treated with anti-oxidants at the factory. Like with the Hedgehog, it's purely pressure holding the sheets together, and the heatsink is weld-free. Although designed primarily for fan-less setups, a fan-clip is being worked on.
Warm Tek also shows Pangolin heatsink design
Posted on Thursday, June 07 2012 @ 12:50 CEST by Thomas De Maesschalck
Besides the Hedgehog coolers, TechPowerUp also got to see Warm Tek's Pangolin C1-6 heatsink design at Computex. This cooler consists of copper sheets which are tightly stacked up at the base, and fan-out upwards. The design is mainly intended for passive cooling, but the firm is also working on a fan-clip.