Summary

A simple belt operated linear slide based on the parts from another thing.

Instructions

This is a bit rough and ready, but I built it to demonstrate leadscrew vs. belt driven linear stages (see http://www.thingiverse.com/thing:46681 for the leadscrew version)

Most of the bits you'll need come from thingiverse.com/thing:41897

Build the bits as described and then hack/modify in line with the picture...... Note: there are no new part files with this thing- the .stl just shows the basic stage construction (i.e. without drives)

Other parts you'll need
Timing pulleys (I used 20 tooth t2.5x6)
Timing belt (length to suit your slide)
Gear motor (mine was a small worm drive unit from an online source- http://www.rapidonline.com/Electrical-Power/Worm-drive-gearbox-with-motor-64483)
A suitable timing pulley mounting bracket (I laminated 2x6mm thk MDF pieces to make an upstand with a 4mm hole through. A pair of upstands supported a 3.5mm steel rod which was, in turn, pushed through the idler timing pulley. The whole lot gets pulled into place by the tension in the belt). See http://www.thingiverse.com/thing:46681 for the shape of the upstand that I used (look at the photo taken post CNCing)

In case itâ€™s not clear from the pictures, youâ€™ll need to change the ends of the slide by cutting away the top for the belt, and making a new hole for the returned end of the belt.

If anyone wants/needs more pictures, just post.

Prototype and play....

Update- URL to the motor source added

Linear Slide - Belt Drive Version