On Feb 11, 9:35 pm, Bruce Spainhower
wrote:

Timesaver lapping compound is a commercial product with the properties you
describe:

http://www.newmantools.com/lapping/time.htm

No affiliation. It was just the result of a search I did about a month ago
when I needed to deal with some tight gears for a project.

Looks like good stuff to me. Did you buy it directly from them or
through someone else?