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A tuck can be created when a previous row is knit together, stitch by stitch, with the present row. This forms a round ridge that projects outwards from the face of the fabric, and is used as a decorative detail. Tuck stitches are created by working in hand knitting by working into the stitch immediately below the next stitch waiting on the needle.
The symbolic representation of a V weld of chamfered plates in a technical drawing. The symbols and conventions used in welding documentation are specified in national and international standards such as ISO 2553 Welded, brazed and soldered joints -- Symbolic representation on drawings and ISO 4063 Welding and allied processes -- Nomenclature of processes and reference numbers.
This is a list of welding processes, separated into their respective categories. The associated N reference numbers (second column) are specified in ISO 4063 (in the European Union published as EN ISO 4063 ). [ 1 ]
There are two modes for seam welding: Intermittent and continuous. In intermittent seam welding, the wheels advance to the desired position and stop to make each weld. This process continues until the desired length of the weld is reached. In continuous seam welding, the wheels continue to roll as each weld is made.
Chain stitch – hand or machine stitch for seams or decoration; Cross-stitch – usually used for decoration, but may also be used for seams; Catch stitch (also 'flat' and 'blind' -catch stitch) – flat looped stitch used in hemming; Darning stitch – for repairing holes or worn areas in fabric or knitting
Sheet metal joints might be made on a seam welding machine where weld purging is carried out automatically as part of the machine design. Where sheet metal is formed into tanks or vessels prior to welding, the inside of the vessel can be purged with a flow of inert gas, however for larger sizes the cost of the gas and the time taken is unrealistic.
A modern industrial knitting machine in action industrial circular knitting fabric machines. A knitting machine is a device used to create knitted fabrics in a semi or fully automated fashion. There are numerous types of knitting machines, ranging from simple spool or board templates with no moving parts to highly complex mechanisms controlled ...
Circular knitting can also be performed by knitting machines: a double-bed machine can be set up to knit on its front bed in one direction and then its back bed on the return, which creates the tube. [2] [3] Specialized knitting machines for sock-knitting use individual latch-hook needles to make each stitch in a round frame. [4]