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FORE:II.(1.) Name some of the principal points to be kept in view in preparing designs?(2.) Why should attempts at designing be confined to one class of machinery?(3.) What objection exists to examining references when preparing designs?
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FORE:This problem of whether to move the material or to move the tools in planing, is an old one; both opinion and practice vary to some extent, yet practice is fast settling down into constant rules.The advantages gained by milling, as stated, are speed, duplication, and accuracy; the disadvantages are the expense of preparing tools and their perishability.
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FORE:"Not for the present, my boy. Without boasting, I do know, but I could not prove it yet; at least, not to the legal mind. Have you got those notes?"
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FORE:In studying improvements with a view to practical gain, a learner can have no reasonable hope of accomplishing much in fields already gone over by able engineers, nor in demonstrating anything new in what may be called exhausted subjects, such as steam-engines or water-wheels; he should rather choose new and special subjects, but avoid schemes not in some degree confirmed by existing practice.
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