{"id":19082,"date":"2026-09-09T11:26:43","date_gmt":"2026-09-09T09:26:43","guid":{"rendered":"https:\/\/www.bkbprecision.com\/?p=19082"},"modified":"2026-09-09T12:13:39","modified_gmt":"2026-09-09T10:13:39","slug":"cnc-milling-vs-cnc-turning-of-plastic","status":"publish","type":"post","link":"https:\/\/www.bkbprecision.com\/en\/news\/cnc-milling-vs-cnc-turning-of-plastic","title":{"rendered":"CNC Milling vs. CNC Turning of Plastic: The Differences at a Glance"},"content":{"rendered":"
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\n CNC Milling vs. CNC Turning of Plastic: The Differences at a Glance<\/span>\n <\/div>\n
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CNC Milling vs. CNC Turning of Plastic: The Differences at a Glance<\/h1>\n
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When machining plastic parts, the choice between CNC milling and CNC turning determines lead time, accuracy, and cost. Both techniques fall under the category of CNC machining, but they differ fundamentally in how the material is machined and for which types of parts they are suitable. On this page, we draw on our expertise to outline the differences: from geometry and material form to accuracy and cost impact, along with a practical decision-making guide for each part type.<\/p>\n<\/div>\n\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n<\/div>\n\n\n\n

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What is CNC milling of plastic?<\/h2>\n\n\n\n

In CNC milling, the tool rotates while the workpiece is securely clamped in place or moves in a controlled manner along multiple axes. A rotating milling cutter removes material from a plastic block or sheet, creating flat surfaces, recesses, contours, and complex 3D geometries. Depending on the complexity of the part, milling is performed using 3, 4, or 5 axes simultaneously. With 5-axis milling, the part can be machined from multiple angles in a single setup, which improves both accuracy and efficiency.<\/p>\n\n\n\n

For large plastic sheets, we at BKB Precision use gantry milling machines, which allow even large components to be machined with an accuracy of up to several thousand millimeters.<\/p>\n\n\n\n

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3-axis milling<\/a><\/div>\n\n\n\n
5-axis milling<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n
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What is CNC turning of plastic?<\/h2>\n\n\n\n

In CNC turning, it\u2019s actually the other way around: the workpiece rotates at high speed around its axis, while a stationary cutting tool removes material. This technique is almost always applied to round bar stock and is ideally suited for cylindrical and conical parts such as shafts, bushings, flanges, and threaded parts.<\/p>\n\n\n\n

One point to note that is specific to plastics: due to the clamping forces during turning, some materials may dent slightly. After unclamping, plastic partially recovers elastically, which affects the final roundness and fit. That is why at BKB Precision we work with controlled clamping forces and cutting conditions tailored to the material, ensuring that the desired dimensions are maintained.<\/p>\n\n\n\n

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The Differences Between Milling and Turning<\/h2>\n <\/div>\n
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