The spout on the black teapot on the left snapped off as I was trying to clean the model.  I don’t have any ABS glue lying around so I tried white glue – which didn’t work at all.  Later I held up the broken piece and the body of the teapot to my hot extruder barrel and melted them back together.  Clearly not a recommended way to repair a part – but it’s been pretty effective.