A tiny bit of oil stone, a file, or a piece of emery cloth are all good for this purpose.
"Outdoor Sports and Games" by Claude H. Miller
Why should sandpaper be used to smooth commutator instead of emery cloth?
"The Traveling Engineers' Association" by Anonymous
In case the terminals become corroded, rub them with a piece of fine emery cloth to remove corrosion.
"Fowler's Household Helps" by A. L. Fowler
Fine flour of emery cloth is the best article to clean the exterior of the barrel.
"Ordnance Instructions for the United States Navy." by Bureau of Ordnance, USN
Other materials on paper or cloth are also used, as carborundum, emery, and so on.
"Handwork in Wood" by William Noyes
Clean afterwards with fine emery cloth.
"Practical Mechanics for Boys" by J. S. Zerbe
He imagined that Horace looked a bit uneasy when Mrs. Emery began taking his clothing out of the till.
"The Crimson Sweater" by Ralph Henry Barbour
The method commonly employed for finishing in the lathe is by the use of a file and emery cloth.
"Turning and Boring" by Franklin D. Jones
Oil is used with emery cloth to give the steel a luster finish.
"Farm Mechanics" by Herbert A. Shearer
Glue is also used in making the match-boxes, and similarly in making sand, emery, and glass papers and cloths.
"Animal Proteins" by Hugh Garner Bennett
Emery cloth Toile d'emeri.
"English-French and French-English dictionary of the motor car, cycle, and boat" by Frederick Lucas