A straight line engine turning machine is a machine used for engraving decorative patterns on a surface. The engraving may be referred to as Guilloché, which also encompasses patterns created with the rose engine lathe. Where the rose engine is based on a lathe, the straight line engine has more in common with a metal planer machine. The straight line engine turning machine commonly consisted of an upright slide, a cross slide, a slide rest which holds the cutting tool, and a pattern bar holder
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