Simplify 3D Lulzbot Taz bed model

Place the STL into the ..AppData->Local->Simplify3D->S3D-Software folder (in Windows). Then, with S3D open and your LulzBot process selected go to Tools->Options (on Windows) and then select the 'Machine' tab. In the 'Printer Models' section, click on the 'Add' button and browse for the STL that you just placed. Once you press OK, the model should appear!