The GK3 BSP Converter lets you convert the .BSP files into more usable .OBJ files! You can then open the .OBJ files with just about any 3D modeler!
The .bsp files within GK3 represent the geometry of each room or area. You can either extract the .bsp's using the in-game console, or by using my handy GK3 Barn Browser.
Once you have your .BSP file ready, open a command prompt and do this:
This will convert inputfile.bsp into default.obj! If you want to specify the name of the output file, just add an extra command option:
bsp2obj inputfile.bsp outputfile.obj
Once you've got your scene geometry converted you should be able to import it into just about any 3D modeller.
The BSP converter tool should be considered beta software. It might break or crash, or otherwise be full of bugs. It's licensed under the GNU GPL.
Last updated March 11, 2007 (v.1)
Download it now! (80 KB)
Source available here
If you have any problems with the converter, think you've found a bug, anything like that, just let me know! Email me at braddabug at comcast no spam please dot net.