Search results
Results from the WOW.Com Content Network
In manufacturing, threading is the process of creating a screw thread.More screw threads are produced each year than any other machine element. [1] There are many methods of generating threads, including subtractive methods (many kinds of thread cutting and grinding, as detailed below); deformative or transformative methods (rolling and forming; molding and casting); additive methods (such as ...
This enabled the use of cotton in clothing for everyone in the former holdings of the Tsugaru, and embroidering dyed indigo cloth with white cotton thread became more common. As the access to materials increased, competition to design the most beautiful patterns rose, with an estimate of over 300 different kogin-zashi patterns being created.
The process of cutting or forming threads using a tap is called tapping, whereas the process using a die is called threading. Both tools can be used to clean up a thread, which is called chasing. However, using an ordinary tap or die to clean threads generally removes some material, which results in looser, weaker threads.
Common sashiko motifs are waves, mountains, bamboo, arrow feathers, shippÅ-tsunagi, pampas grass and interlocking geometric shapes, amongst others. [4] Sashiko embroidery is traditionally applied with the use of specialist needles and thread, though modern day sashiko may use modern embroidery threads and embroidery needles.
Silk cloth and thread Hardanger embroidery: Norway: Buttonhole stitch, cable stitch, fly stitch, knotted stitch, picot, running stitch, satin stitch: White thread, white even-weave linen cloth Hedebo embroidery: Hedebo, Zealand, Denmark White linen cloth and thread Kaitag textiles: Kaytagsky District, Dagestan, Russia Laid-and-couched work
Henry Maudslay's early screw-cutting lathes of circa 1797 and 1800.. A screw-cutting lathe is a machine (specifically, a lathe) capable of cutting very accurate screw threads via single-point screw-cutting, which is the process of guiding the linear motion of the tool bit in a precisely known ratio to the rotating motion of the workpiece.
Higbee cut on male thread. A Higbee cut is a specific cut added to a screw thread to produce a blunt start, instead of the sharp end of the unmodified screw thread. It is named for its inventor Clinton Higbee.
Many thread sizes have several possible tap drills, because they yield threads of varying thread depth between 50% and 100%. Usually thread depths of 60% to 75% are desired. People frequently use a chart such as this to determine the proper tap drill for a certain thread size or the proper tap for an existing hole.