Sharp Edges! File Manufacturing in Germany скачать в хорошем качестве

Sharp Edges! File Manufacturing in Germany

From steel to sharp precision: forging, grinding, hardening, and perfecting every file. How metal files are made — and why they are hard but brittle. 1. Cutting and shaping the blank A piece of steel is first cut to length (Ablängen) and then punched or stamped to the correct outline (Ausstanzen). This produces the basic shape of the file: the body and the tang (handle spike). 2. Forging the tang and tip The tang (Angel) and sometimes the tip are forged mechanically. This makes the tang long and tapered, so it can be inserted into a handle. 3. Grinding and smoothing The rough blank is ground and smoothed (Schleifen, Schmirgeln) so the surface is flat and ready for cutting the teeth. 4. Cut the teeth A tooth-cutting machine works like a small hammer with a chisel. It: Holds the file blank rigidly. Uses a sharp chisel-like tool called a beitel. Moves in a repeating pattern (like tap-tap-tap-tap). Each tap cuts a small angled groove in the steel. The machine shifts the blank slightly after each strike, creating a regular series of parallel lines — the teeth. This is NOT pressing; it is actually cutting. The lines you see are shear cuts, not stamped marks. 5. Harden (quench) the file The quench does not ruin the sharp edges because: The entire shape simply becomes hard. The fine chisel cuts become very sharp, which is exactly what makes a file effective. 6. Temper lightly 7. Clean, finish, stamp logo Files must: Stay sharp for a long time Resist wear against other metals To achieve this, the steel is hardened to a very high level—sometimes 60–65 HRC. Steel at this hardness is: Extremely wear-resistant But also brittle That’s why files can snap if bent. They are intentionally left very hard, with only a light tempering afterwards (to prevent shattering). ⸻ 👇🏼 Watch more Crafted History videos 👇🏼 Traditional Diel Sawing:    • Oak Log to Planks: Traditional Diel Sawing   Hand-Powered Lathe:    • WATCH FULL Traditional Hand-Powered Lathe ...   Oak Tree to Watermill Axis:    • Turning a Tree into a Watermill Shaft (Ful...   🔔 Subscribe for a new video every week! Questions? - Drop it in the comments, I read them all! Original source material: Scharfe Kanten. Feilenherstellung im Bergischen Land. (2009) LVR‑Institut für Landeskunde und Regionalgeschichte Remscheid, Germany Buch und Regie: Alois Döring, Wilhelm Mathies Original video (15 min):    • Scharfe Kanten. Feilenherstellung im Bergi...   Context: Many of the techniques and machines shown in this film were already outdated at the time of filming. The purpose of the documentation was to preserve and value traditional practices. This edit: Edited by GooseMedia Licensed under CC BY 4.0 #sharpedges #filemanufacturing #germany #industrialrevolution #factory #steel #precision #craftsmanship #tools #metalwork #engineering #industrial #manufacturing #grinding #forging #stamping #industrialhistory #industrialheritage #industrialcraft #industrialskills #industrialtools #industrialfactory #industrialproduction #industrialprocess #industrialdesign #industrialengineering #industrialtechnology #industrialmachines #industrialcraftsmanship #industrialdocumentary #industrialvideo #industrialworkshop #industrialworkers #industrialskillsheritage #industrialtradition #industrialinnovation #industrialmechanics #industrialgrind #industrialforge #industrialstamp #industrialfiles #industrialsharpness #industrialsteel #industrialtoolsfactory #industrialprecision #industrialcraftdocumentary #industrialheritagevideo #industrialproductionprocess #industrialengineeringhistory #industrialtechnologyheritage #industrialmachinery