Eustathios Z-Axis Bed Support

Remix of Eric Lien's [Eustathios v2 Spyder](https://github.com/eclsnowman/Eustathios-Spider-V2) Z-axis bed support, designed to work with a set of 1204 ball screws from Golmart. When attaching the ball nut, I'd recommend installing it so the grease port is accessible. The part was trimmed to increase z travel by 1.5cm.

The two parts are identical, except the left version adds an additional hole for a M5 z-axis adjustment screw.

**Parts:**
2 - [12mm ball screw](http://www.aliexpress.com/store/product/Best-quality-1pc-Ball-screw-SFU1204-L425mm-1pc-RM1204-Ballscrew-Ballnut-standard-processing-for-CNC-BK10/920371_32592258963.html)
8 - [M4x20mm countersunk screws](http://www.trimcraftaviationrc.com/index.php?_a=product&product_id=352)
8 - [M4 Locknuts](http://www.trimcraftaviationrc.com/index.php?_a=product&product_id=235)

**Printer:**
-- [RigidBot](http://thrinter.com/rigidbot-modifications/)

**Filaments:** (full list can be found on [thrinter.com](http://thrinter.com/fi