Try rubbing alcohol. Not only does it make rubber slide real easy, but it dries quickly and won't make metal rust.
Used to use it all the time for pushing those rubber cords on slingshots. Didn't have to worry about water not drying and the cord coming back and hitting you cause it was still wet.
Used to use it all the time for pushing those rubber cords on slingshots. Didn't have to worry about water not drying and the cord coming back and hitting you cause it was still wet.
