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Slide
These parts can be used to either make C-shaped or D-shaped slide in conjunction with our extrusion.
http://www.thingiverse.com/thing:213749
You will need 8mm (diameter) steel balls which will be placed between the extrusion and the slide. And the end pieces will need to screwed on at both ends to prevent the balls from rolling out.
NOTES:
We are planning to get many of these parts molded so "makers" can buy em cheap and use for their projects. We need your feedback --

1. What other parts would you like added to the library?
2. What colors should different parts be molded in?
3. What would you build with it?
4. Would you like any parts modified?
   We welcome other comments and suggestions