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See wood warping. crotch The section of a tree where a branch divides from the trunk, or the trunk divides in two; typically an area of convoluted grain. crossgrain Working perpendicular to the wood grain. crosscut A cut made perpendicular to the wood grain. crown of thorns A system of self-supporting and interlocking pieces. cruck
The earliest known ironwork are beads from Jirzah in Egypt dating from 3500 BC and made from meteoric iron with the earliest use of smelted iron dates back to Mesopotamia. However, the first use of conventional smelting and purification techniques that modern society labels as true iron-working dates back to the Hittites in around 2000 BC.
An andiron, firedog, fire-dog, fire dog or iron-dog is a bracket support, normally one of a pair, on which logs are laid for burning in an open fireplace, so that air may circulate under the firewood, allowing better burning and less smoke. They generally consist of a tall vertical element at the front, with at least two legs.
Iron treated this way is said to be wrought (worked), and the resulting iron, with reduced amounts of slag, is called wrought iron or bar iron. Because of the creation process, individual blooms can often have differing carbon contents between the original top and bottom surfaces, differences that will also be somewhat blended together through ...
A common name for an ornamental ironworker is a finisher because they are responsible for finishing the structures after the structural and rebar work is done. [16] The main wage for ornamental ironworkers ranges from $20.89 per hour to $45.00 per hour. The wages are adjusted according to the location of the work and the nature of the work.
Wrought iron is an iron alloy with a very low carbon content (less than 0.05%) in contrast to that of cast iron (2.1% to 4.5%). It is a semi-fused mass of iron with fibrous slag inclusions (up to 2% by weight), which give it a wood-like "grain" that is visible when it is etched, rusted, or bent to failure.
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Flake hammerscale forms due to the rapid oxidation of hot iron in air. A heated piece of iron will develop an external layer of iron oxide which then may separate from the original piece due to a hammer strike or differential thermal contraction. [6] Flake hammerscale is produced in large quantities during multiple stages of the smithing ...