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2. Jointing (sharpening) - Wikipedia

   en.wikipedia.org/wiki/Jointing_(sharpening)

   Circular saw blades are jointed prior to sharpening so that all teeth protrude from the blade the same distance from the centre. Jointer knives are ground until they are all the same length prior to sharpening. The edges of a card scraper are jointed by running the edge over a file or a sharpening stone prior to using a burnisher to turn the burr.

3. Knife sharpening - Wikipedia

   en.wikipedia.org/wiki/Knife_sharpening

   The shape near the edge can be highlighted by rotating the knife and watching changes in reflection. Nicks and rolled edges can also be seen, as the rolled edge provides a reflective surface, while a properly straightened edge will be invisible when viewed head-on. [4] Edge of a knife after sharpening and stropping.

4. Sharpening - Wikipedia

   en.wikipedia.org/wiki/Sharpening

   Video: Saw blade sharpening machine Edge/Apex of a knife after sharpening and stropping. Although this edge is sharp enough to bite a thumbnail, cut paper smoothly, or shave arm hair, the microscope plainly shows an edge which reflects light back into the lens. A truly sharp edge is too thin to reflect significant light.

5. Sharpening stone - Wikipedia

   en.wikipedia.org/wiki/Sharpening_stone

   Roughly sharpening a blunt edge 1000-2000: 8 μm: Fine, will leave a blade sharper than most factory edges 4,000: 4 μm: Ultra-fine, for cutting meat 8,000: 2 μm: Further smoothing a sharp edge for cutting fish or vegetables (sinews in meat will bend an edge this sharp) 10,000: 0.5 μm: Polishing an edge to a mirror-smooth (but possibly ...

6. 14-year-old arrested with gun at Apalachee High School, site ...

   www.aol.com/14-old-arrested-gun-apalachee...

   A teen was taken into custody this week for having a firearm at Apalachee High School in Winder, Georgia −the site where 14-year-old Colt Gray is accused of shooting four people dead in ...

7. President of Michigan company stabbed by employee during ...

   www.aol.com/president-michigan-company-stabbed...

   Erik Denslow, president of Anderson Express Inc., is in stable condition after allegedly being stabbed by a 31-year-old employee during a staff meeting.

8. US railroad Amtrak sets passenger record in 2024 - AOL

   www.aol.com/news/us-railroad-amtrak-sets...

   U.S. passenger railroad Amtrak said on Tuesday ridership topped 2019 pre-COVID levels for the first time in 2024 and reached a record high even with less capacity. Amtrak reported an adjusted ...

9. Razor strop - Wikipedia

   en.wikipedia.org/wiki/Razor_strop

   A straight razor with a hanging strop. A razor strop or simply a strop (sometimes called a razor strap or strap) is a flexible strip of leather, canvas, denim fabric, balsa wood, or other soft material, used to straighten and polish the blade of a straight razor, a knife, or a woodworking tool such as a chisel.