Version 1.20 05/08/08

The STL2GBR Slicing now allows the user to choose between the Z axis, Y axis and X axis. The means that if a user needs to slice along Y he can specify Y rather than re-output his STL after changing the coordinate system.

Previous versions of STL2GBR prevented a user from specifying slices outside of the extents of the data. This check has been removed in order to allow users to synchronize slices from different STL files with different extents.

Version 1.18 05/18/06

Configuration settings now allow embedding level polygon output to be selected in addition to the cut line output. The embedding level output is the default setting.

Any regular polygons detected in the input are output to Gerber as flashes.

A bug fix for engine crash was done with respect to handling slices at Z max and Z min values. To prevent the extraction of no data, a value close to zero is added to Z Min slice and subtracted from Z Max slice.

Version 1.16 03/28/05

An error in the slicing algorithm produced some illegal polgyons in the GDSII data. This has been corrected. [Reported by NASA]

Version 1.15 03/14/05

The graphical user interface was added.

Version 1.14 03/01/05

Version 1.13 did not support both cases for the units option i.e. -units:mm was not interpreted correctly (it was expecting -units:MM) and actually wrote the output file in inches. This has been fixed.

Version 1.10 02/08/05

This is the first release outside of internal testers. Does not include a user interface and must be run using the command line from a DOS box.