Jointing refers to the process of filing or grinding the teeth or knives of cutting tools prior to
sharpening
Sharpening is the process of creating or refining the edge joining two non-coplanar faces into a converging apex, thereby creating an edge of appropriate shape on a tool or implement designed for cutting. Sharpening is done by removing materia ...
. The purpose of jointing is to ensure that all surfaces to be sharpened are of a consistent size and all imperfections have been removed.
Jointing is usually the first step in the process of sharpening:
*When sharpening a
hand saw
In woodworking and carpentry, hand saws, also known as "panel saws", are used to cut pieces of wood into different shapes. This is usually done in order to join the pieces together and carve a wooden object. They usually operate by having a s ...
blade, the teeth are jointed by running a flat
file
File or filing may refer to:
Mechanical tools and processes
* File (tool), a tool used to ''remove'' fine amounts of material from a workpiece
** Filing (metalworking), a material removal process in manufacturing
** Nail file, a tool used to g ...
over the tips of the teeth so that they are all of the same height.
*
Circular saw
A circular saw is a power- saw using a toothed or abrasive disc or blade to cut different materials using a rotary motion spinning around an arbor. A hole saw and ring saw also use a rotary motion but are different from a circular saw. '' ...
blades are jointed prior to sharpening so that all teeth protrude from the blade the same distance from the centre.
*
Jointer
A jointer or in some configurations, a jointer-planer (also known in the UK and Australia as a planer or surface planer, and sometimes also as a buzzer or flat top) is a woodworking machine used to produce a flat surface along a board's length ...
knives are ground until they are all the same length prior to sharpening.
*The edges of a
card scraper
A card scraper or cabinet scraper is a woodworking shaping and finishing tool. It is used to manually remove small amounts of material and excels in tricky grain areas where hand planes would cause tear out. Card scrapers are most suitable for ...
are jointed by running the edge over a file or a
sharpening stone
Sharpening stones, or whetstones, are used to sharpen the edges of steel tools such as knives through grinding and honing.
Such stones come in a wide range of shapes, sizes, and material compositions. They may be flat, for working flat edg ...
prior to using a
burnisher to turn the burr.
Jointing is usually carried out infrequently as it removes a lot of material from the edge of the blade.
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Woodworking