American pattern files have two different types of cut:
Facts on Files| Paul Budzik | Fine Scale Modeling
Long Angle Lathe File
Making chisels out of files | UK Workshop
Chapter 4: Filing & Grinding | Metal Arts Press
Facts on Files| Paul Budzik | Fine Scale Modeling
Safety First Video #1, How to Safely Use a File on the Lathe
Files - Fit and Finish - Bladesmith's Forum Board
Types of File Tools - The Home Depot
File (tool) - Wikipedia
8" Inch Mill File Single Cut Bastard for Sharpening Saws, Lathes & Tools
14" Flat Fine Cut Long Angle Lathe Hand File
Files | Jantz Supply - Quality Knifemaking Since 1966
Mill Red Tang American Pattern File | Simonds Saw
Engineering Mill Files with 2 Flat Edges Bastard/Second Cut Unhandled | BAHCO | Bahco International
Long Angle Lathe File - JK Files & Engineering Limited
12" Lathe File
Mill File
Mill File v. Flat File: What's the Difference? - Popular Woodworking Guides
14" Lathe File
File Basics: How to select and use files for metalworking
Long Angle Lathe File - 250mm Cut 2 (Second)
