YAPML yet another poor man's library that makes things finding it hard to render and taking its time to compile.
In this case the self-replicating polyhedron is intended to give a mechanical touch to your freshly (or not) designed cylindrical surfaces. Hmmmm... you can also thing that those things all-around the cylinder are diamonds and use it for jewelry.
The examples scad provided uses OpenSCAD MakerBot Font Module by grokbeer licensed under BY-SA-NC license (link in the instructions section)
Photos... http://aubenc.imgur.com/knurled_finish_surface
UPDATE:
(Just in case you don't read the comments bellow)
Video by sirmakesalot (thank you very much!!)... http://www.youtube.com/watch?v=uz8h--NsX7E
Things using this library :-)
Bowden Clamp for Ultimaker by owen
http://www.thingiverse.com/thing:11864
Spindle for 5lb spool by mikeq
http://www.thingiverse.com/thing:12871
Knurled "topper" for stepper motors by Pazu
http://www.thingiverse.com/thing:13978
Ultimaker Hobbed Bolt Release by bkubicek
http://www.thingiverse.com/thing:14505
Hobbed bolt holder by coffeeMaker
http://www.thingiverse.com/thing:16136
Shane's Coral Frag Plugs by sgraber
http://www.thingiverse.com/thing:16982
Bowden Clamp for Ultimaker (Feeder End) by pit3k
http://www.thingiverse.com/thing:17027
100mm_Kbolt.stl | 1.2MB | |
knurledFinishExamples.scad | 4.4KB | |
knurledFinishingLib.pdf | 644.3KB | |
knurledFinishLib.scad | 2.4KB | |
Makerbolt.stl | 588.4KB | |
makerbot_M_knurled_coin.stl | 217.0KB | |
nut_4_Makerbolt.stl | 1009.4KB |