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IV. Biosecurity is specific operational steps to stop diseases fromentering your farm or once animals are infected, stopping it fromspreading to other barns on the farm or to other farms. Biosecurityis important for a great number of reasons. First, it is an essentialaspect of on farm food safety programs. Keeping food productswholesome and of highest quality is important for the health andwelfare of consumers. Secondly, animals are healthier and moreproductive. This benefits the farming community through greaterefficiency and profitability. Finally, a vibrant agriculturalcommunity is a positive influence on the economy of our nation,and an important resource in maintaining a healthy environment.

(2) The mortise and tenon—Fastening of end-grain to side-grainjoints can be accomplished with a high level of success using themortise and tenon. The basic joint is fashioned by forming the end-grain component, the tenon, into a round or rectangular crosssection and inserting it into a hole, or mortise, of the same size andshape in the side-grain component.

III.(1) In cutting-tool design, a compromise must often be made. Itwould seem advantageous to increase the cutting angle and reduce the sharpness angle, thereby reducing the amount of distortion ofthe chip and the resulting forces against the tool. In practice,however, one soon runs up against the limitations of steel. Such anidealized cutting edge would have little strength, and would soonbreak or become dull. Increasing the sharpness angle of the toolmakes the edge more durable, but eventually leads to excessivefrictional resistance or to uncontrollable chip formation.

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