Circular Printbed Calibration Pattern

This is a printable pattern I've been using to check if my print bed and first layer settings are properly set. I find it more useful for filaments that don't like sticking to the bed.

Note: Certain versions of Repetier Host miss some of the little pieces of the circle. To fix this, select "Fix Normals" before slicing. (Checked on v1.0 beta.)