Kind of a long story with a lot of pictures. Relevance to sci.engr.joining.welding is that I TIG welded the tramp oil/coolant diverter vessel, using sheetmetal pilfered from the TIG class (done during TIG class as well).
formatting link
The story shows the belt skimmer, aerator pump, diverter, bracket etc and shows how it works.
Flame away.