Customizable MakerBot Replicator Bed Level Jig
I had trouble printing phineasjw's Replicator Bed Level Jig (http://www.thingiverse.com/thing:23257) with ABS. Indicator was going in fine with enough pressure, but holes for magnets were almost 1mm smaller so created an OpenSCAD file to allow for making bigger holes.
Download both the .scad file from here and a V2 STL from the original Thing.
Then just adjust magnet size (hole_diameter) and account for material tolerance (hole_tolerance).
Both will be added up and you just need to export STL from OpenSCAD.