According to Michel Auriou, the maker of Auriou hand-cut rasps, the best way to clean a rasp is using an all natural bristle brush. He says that metal brushes
China Wooden Handle Cleaning Copper Brass Wire Scratch Brush
Larger Sized Hand Cut Riffler Rasp Set
Set of 2 Phillips Screwdrivers for Small Box - Made In The USA
Scratch Brush with Long Handle, Carbon Steel, 3 x 19 Rows
Fret Saws
The Woodworker: The Charles H. Hayward Years 1939-1967: Vol. IV
Surgical Instrument Cleaning Brush, Stainless Steel Bristle
7.25” long. Sturdy nylon bristles are designed to clean hard to reach places without scratching. Stainless steel bristles are ideal for cleaning
Instrument Cleaning Brushes
Half-round cabinet rasps
DiaFold Coarse
Miltex Accessories: Stainless Steel Cleaning Brushes For Rasps, Files & Burs (3 set)
Any way to get dried wood glue out of a rasp/file? : r/woodworking
Plastic Surgical Osteotomes and Rasps
Skroo-zon File Handles - for 6 Files (#4)
Deluxe Coping Saw (360 degrees) and blades