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Three needle bind/cast off This bind/cast off is used for joining two pieces of knitting, such as the front and back of a sweater by binding/casting off their stitches together to create a seam. For this bind/cast off, the two needles (in the case of a sweater, each may hold the shoulder stitches) are held parallel with the right sides of the ...
In book publishing, casting off is the process of estimating the number of signatures required to typeset a manuscript. [1] An accurate castoff (or cast off) is important because the page length of a book affects many variables, including the cost of producing the book, the cover price, how many books can fit in a carton, and the width of the ...
Long-tail cast-on Casting on from one loop (more loops will be added to the top of the needle) In knitting, casting on is a family of techniques for adding new stitches that do not depend on earlier stitches, i.e., having an independent lower edge. In principle, it is the opposite of binding off, but the techniques involved are generally unrelated.
During machining processes, some metal is removed from the piece. To compensate for this, a machining allowance (additional material some times referred to as green) should be given in the casting. [7] the amount of finish allowance depends on the material of the casting, size of casting, volume of production, method of molding, etc.
The sprue is cut off and recycled. The casting may then be cleaned up to remove signs of the casting process, usually by grinding. [12] Finishing: After grinding, the completed casting is then subject to finishing. This usually goes further than grinding, with impurities and negatives being removed via hand tooling and welding.
Mass finishing is a group of manufacturing processes that allow large quantities of parts to be simultaneously finished. The goal of this type of finishing is to burnish , deburr , clean, radius, de-flash , descale , remove rust , polish, brighten, surface harden , prepare parts for further finishing, or break off die cast runners.
Casting porosity can be caused by gas formation or solidification while the metal is being moved from a liquid state to a solid state. This porosity can range in size, from sub-micron to voids greater than 10 mm, depending on the casting. Casting defects caused by porosity can affect the part’s structural integrity, creating a failure point ...
Plaster mold casting is used when an excellent surface finish and good dimensional accuracy is required. Because the plaster has a low thermal conductivity and heat capacity, the metal cools more slowly than in a sand mold, which allows the metal to fill thin cross-sections; the minimum possible cross-section is 0.6 mm (0.024 in).