Hey Guys -
We tried to built a slider with materials that was accessible to us (We just couldn't get the base-plate for those ultra cool sliders)

So we went with something more orthodox, you might say - We applied the same design of the PVC Track/Dolly - only on an aluminium, eventually tripod-mounted rails -

Here are some photos of our v0.3 - we still have the head, and tripod mounts to attach - and add some security measures so things won't fall apart :-)

Some youtube Test footage: YouTube - NaturalSlider DIY Slider 550d (http://www.youtube.com/watch?v=U5ICuygCI34&fmt=22) - we didn't pay much attention to the aesthetics of the video - so, work with me here :>