Yazzo Double Slider Bushing Block

Sometimes I want to play with a fast moving tool head, like the Ultimaker machine has.

This thing is the essential linear slide moving part that allows you to play with a fast light weight tool head that moves in two of the three axes.

It has a similar "bushing as bearing" design as the Yazzo Bushing Block: http://www.thingiverse.com/thing:5825

In this case though, it uses two bushings instead of just one. One for x-axis, one for y-axis. You basically just print this thing, insert bus