https://peertube.dngr.us/videos/watch/222db1d7-8bc6-4b57-81c6-8cbdc7fdbf1e Join this channel to get access to perks: https://www.youtube.com/channel/UCddem5RlB3bQe99wyY49g0g/join Want to learn more about Periscope Film and get access to exclusive swag? Join us on Patreon. Visit https://www.patreon.com/PeriscopeFilm Visit our website www.PeriscopeFilm.com This black-and-white film titled “How to File” is an instructional film presented by PBF (Petroleum Films Bureau) in 1941. It provides detailed instructions on how to correctly file metal, explaining the proper stands, angles, grips, strokes, techniques, and file types used when filing metal. The film is directed by Kay Mander, photographed by Sydney Beadle, and produced by Edgar Anstey. It was almost certainly made as part of the WWII defense build up, in hopes of training new machine shop workers how to do the job more efficiently. Credits (00:07). “How to File” title banner (00:14). Credits (00:20). A worker is filing a piece of metal (00:33). A student secures a metal piece in a table vise (00:51). His teacher adjusts the metal piece’s position in the vise (01:08). He hands the student a file (01:21) and provides the student with instructions on how to properly position oneself and stand when filing (01:24). The teacher takes the file and shows the student how to correctly hold and angle the file (01:57). An animation shows a close-up view of a file and the direction of its teeth (02:28). The teacher is filing (02:38). An animation shows a close-up view of a file and the direction of its teeth (02:44). The teacher is showing his student how to file (02:50). He cleans the file from metal swarf with a wire brush (03:12). A double-cut file is used to file in both forwards and backwards filing strokes (03:18). The teacher uses a wire brush to clean the file (03:34). He then demonstrates how to file at an angle to file more evenly as the student observes (03:39). An animation explains this (04:01). The teacher hands his student the file (04:12). The student attempts filing (04:15). An animation explains how his strokes led to an uneven edge (04:30). The teacher demonstrates the corrected technique (04:37). The student attempts again (04:39). He checks the accuracy of his work (05:03). The teacher files in the opposite direction and exposes high points on the piece of metal (05:07). He continues filing in the new direction until the piece is even (05:19). He removes the piece from the table vise (05:32). He uses the side of the file to test if the piece has a straight edge (05:38). He then rubs the piece on a red led stain to reveal any last imperfections (05:52). The teacher secures the metal in the table vise again (06:01). He files it using a technique called draw filing which requires a different grip on the file (06:13). The same technique is used to file rounded ends (06:35) and to file in narrow slits using a warding file (06:44). A rat tail file is used to file small curves (06:54). A safe edge file is used to file one side of a right angle (07:05). A half round file is used to file a circular shape (07:21). The student is filing (07:39). “The End” text overlay (07:56). Motion picture films don't last forever; many have already been lost or destroyed. For almost two decades, we've worked to collect, scan and preserve the world as it was captured on 35mm, 16mm and 8mm movies -- including home movies, industrial films, and other non-fiction. If you have endangered films you'd like to have scanned, or wish to donate celluloid to Periscope Film so that we can share them with the world, we'd love to hear from you. Contact us via the weblink below. This film is part of the Periscope Film LLC archive, one of the largest historic military, transportation, and aviation stock footage collections in the USA. Entirely film backed, this material is available for licensing in 24p HD, 2k and 4k. For more information visit http://www.PeriscopeFilm.com Source: https://www.youtube.com/watch?v=geoG5m8U2dM Mirrored from Periscope Film (https://www.youtube.com/@PeriscopeFilm) Sat, 13 Jun 2026 13:30:01 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://peertube.dngr.us https://peertube.dngr.us/lazy-static/avatars/41a6fee9-7f57-42d0-a5fc-5db4f1af2e31.png https://peertube.dngr.us/videos/watch/222db1d7-8bc6-4b57-81c6-8cbdc7fdbf1e All rights reserved, unless otherwise specified in the terms specified at https://peertube.dngr.us/about and potential licenses granted by each content's rightholder.