Originally Posted by
smd4
Silca sells degreaser, but I bet there’s a better/cheaper way.
The traditional option is to use several rounds of white spirits followed by a round of ethanol. This is effective, and the cost-of-entry for the raw material is very cheap, but there's a considerable drawback of ending up with a large amount of slightly-dirty solvent.
Products like Silca Chain Stripper - or Allpine Extra from Effetto Mariposa - are more expensive by volume of cleaner, but they're still quite inexpensive on a per-use basis. They're significantly nicer to deal with, both in terms of speed and waste. You don't need to use them, but they exist for a reason.