that depends on the makeup of the small pieces of metal. Ferrous metals can be removed by using a magnetic oil drain plug. A magnetic oil drain plug can be difficult to find, but they will trap ferrous metal.
Centrifuging. This is used to separate small particles that spread out throughout the liquid & remain in suspension.
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add alcohol
if i was to remove metal i would use pliers
Magnets might do it.
For example ferrous metals (Fe, Co, Ni) can be separated from other metals with an (electro)magnet.
It can be either the passing of the oil through a filter system, or the passing of the oil through a magnetic system, or a combination of both.
Strain It with a small hole strainer. Trust me, I've done it before.
A violent reaction and the formation of hydroxides.
small pieces of metal or plastic with reflective surfaces. some are more of fine glass.
A lathe is used to turn chunks of metal into useful parts or pieces. They have a rotating arm that works the metal, removing small pieces a at time until the desired shape is reached. A manual lathe means that the operator of the lathe holds, guides and directs the metal in the machine.
scrap metal yard, small engine repair or similar