Search results
Results from the WOW.Com Content Network
Thus a single line can be drawn connecting all nine dots—which would appear as three lines in parallel on the paper, when flattened out. [18] It is also possible to fold the paper flat, or to cut the paper into pieces and rearrange it, in such a way that the nine dots lie on a single line in the plane (see fold-and-cut theorem). [17]
A groove can be cut by the following methods: electric router using a straight or rebate bit; circular saw with multiple passes (depending on width and depth) dado set in a single pass; spindle moulder (wood shaper) hand saw and chisel; router plane; grooving plane
It is also commonly used in the building of boats since there is rarely a straight edge but frequently many curves. Traditionally, coping would be performed using a coping saw. There are also mechanical means of producing coped joints, including matching rail and stile cutters for the router as used in frame and panel construction.
An ellipsograph is a trammel of Archimedes intended to draw, cut, or machine ellipses, e.g. in wood or other sheet materials. An ellipsograph has the appropriate instrument (pencil, knife, router, etc.) attached to the rod. Usually the distances a and b are adjustable, so that the size and shape of the ellipse can be varied
A marking knife or striking knife is a woodworking layout tool used for accurately marking workpieces. [1] It is used to cut a visible line, which can then be used to guide a hand saw, chisel or plane when making woodworking joints and other operations. [2]
A straightedge or straight edge is a tool used for drawing straight lines, or checking their straightness. If it has equally spaced markings along its length, it is usually called a ruler . Straightedges are used in the automotive service and machining industry to check the flatness of machined mating surfaces.
A chalk line or chalk box is a tool for marking long, straight lines on relatively flat surfaces, much further than is practical by hand or with a straightedge. They may be used to lay out straight lines between two points, or vertical lines by using the weight of the line reel as a plumb line .
In addition to drawing horizontal lines, a T-square can be used with a set square to draw vertical or diagonal lines. [1] The T-square usually has a transparent edge made of plastic which should be free of nicks and cracks in order to provide smooth, straight lines. T-squares are also used in various industries, such as construction.