This is a simple model used to test support interface material combinations. 

Set filament 1 as your main printing filament and filament 2 as your support interface filament. 

For example, if I set filament 1 as PETG and filament 2 as PLA, the model will be printed in PETG. The support interface will be printed in PLA. Since PLA and PETG do not stick well together, it will create a cleaner interface upon support removal. 

This model can be used to test other combinations as well such as ASA model + PETG interface. 

Make sure to set the correct support interface on the support tab in Orca/Bambu Slicer.