Search results
Results from the WOW.Com Content Network
Sharpened metal drop-point blade Naturally occurring sharp obsidian piece Shark tooth with a sharp, serrated edge A sewing needle comes to a sharp point. Sharpness refers to the ability of a blade, point, or cutting implement to cut through materials with minimal force, and can more specifically be defined as the capacity of a surface to initiate the cut. [1]
A sharp edge may be 'dressed' using a Honing steel The substance on the sharpening surface must be harder (hardness is measured on the Mohs scale ) than the material being sharpened; diamond is extremely hard, making diamond dust very effective for sharpening, though expensive; less costly, but less hard, abrasives are available, such as ...
Edge 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.
A diamond knife is a very sharp knife in which the edge is made from diamond, invented by Humberto Fernández-Morán in 1955. [1] [2] Diamond knives are used for medical and scientific applications where an extremely sharp and long-lasting edge is essential. The knives are very expensive to purchase, depending on the quality and size of the ...
The serrated edges of tiger shark teeth A hunting knife with a serrated back edge Serrated leaves of the stinging nettle, Urtica dioica A Meyerco bolt action knife, designed by Blackie Collins, and featuring a partially serrated blade. Serration is a saw-like appearance or a row of sharp or tooth-like projections. A serrated cutting edge has ...
Underside of a groin vault showing the arris. In architecture, an arris is the sharp edge formed by the intersection of two surfaces, such as the corner of a masonry unit; [1] the edge of a timber in timber framing; the junction between two planes of plaster or any intersection of divergent architectural details.
Metal burr extending beyond the edge of the cut piece, view on the cut face (top) and from the bottom (bottom) A burr is a raised edge or small piece of material that remains attached to a workpiece after a modification process. [1] It is usually an unwanted piece of material and is removed with a deburring tool in a process called deburring.
In machining a chamfer is a slope cut at any right-angled edge of a workpiece, e.g. holes; the ends of rods, bolts, and pins; the corners of the long-edges of plates; any other place where two surfaces meet at a sharp angle. Chamfering eases assembly, e.g. the insertion of bolts into holes, or nuts.