Silicone Idler Springs

These springs have only been tested on Greg Frost's Hinged Extruder http://www.thingiverse.com/thing:8252 (as a replacement to the idler springs), although may be useful as a replacement for other springs.

Having said that I have also found it useful as a dampener to allow some play with my z motors, while keeping them firm and steady.

The silicone is a small ellipsoid shape cut from a Silicon pot holder from a "$2 shop", which has a small hole for a bolt to pass through.

Initially this