Then use a whetstone or emery paper to fine-tune the edges.
From the denverpost.com
Run the material through and if it catches on a rough spot get out the emery paper and do a quick fix-it.
From the dailyherald.com
Preparation is important and it is often helpful to roughen the surface with a file, emery paper or other abrasive material to provide better anchorage for the glue.
From the en.wikipedia.org
Silver dag was removed from the underside of samples using emery paper, to prevent the possibility of spurious magnetic signals attributed to material from the heater block in the deposition system.
From the nature.com
Then sand first with medium coarse paper and then with emery cloth or a fine grade sandpaper, to the bare wood.