Senior Member
Join Date: Apr 2006
Location: Washington County, Vermont, USA
Posts: 3,778
Bikes: 1966 Dawes Double Blue, 1976 Raleigh Gran Sport, 1975 Raleigh Sprite 27, 1980 Univega Viva Sport, 1971 Gitane Tour de France, 1984 Lotus Classique, 1976 Motobecane Grand Record
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I don't like OA, but as Gugie suggests, I once made some little cup-shaped dams around rusty cable guides from modeling clay, and filled them with Evaporust. The trick is to really smear the clay onto the tubes to get a liquid-tight seal. I forget what I used to get the clay residue off when I was done--mineral spirits, probably.