Designed an improved side for the LM8UU (8mm linear bearing) based camera slider Matt Roberts designed.
Improvements:

1. can be mounted on 1 or 2 tripods
2. More stability by center 40x10mm L profile
3. 1/4" UNC camera accessories can be mounted to it
4. All bolt holes tapered for easy assembly
5. All human touchable edges rounded to make it nicer to touch
6. 8mm rods secured by M3 grub screws

• Follow up posting. I manufactured them.
• Design files on Thingiverse 
• Original design on Thingiverse 
• Google+ posting