Calibration Plate

This a a plate that I made up real quick because I was sick of 20mm boxes. 20mm boxes were just too small and cause sagging and all kinds of craziness. This also makes it easier to check if your Makerbot is printing the exact size it should be.

Also useful for checking if your print bed is level. (I recommend using pencil springs to level it. http://www.thingiverse.com/thing:6558 details this)

Also useful to see if your belts are properly tightened. It the circles don’t come out as perfe