{"id":166329,"date":"2023-05-25T15:48:58","date_gmt":"2023-05-25T07:48:58","guid":{"rendered":"https:\/\/facfox.com\/docs\/?post_type=kb&#038;p=166329"},"modified":"2023-06-26T11:36:19","modified_gmt":"2023-06-26T03:36:19","slug":"8-important-design-tips-for-cnc-machining","status":"publish","type":"kb","link":"https:\/\/facfox.com\/docs\/kb\/8-important-design-tips-for-cnc-machining","title":{"rendered":"8 Important Design Tips for CNC Machining"},"content":{"rendered":"<p><strong>CNC machining design guidelines:<\/strong>\u00a0CNC machining is a subtractive manufacturing technology that uses computer-controlled cutting tools to create custom parts from a solid block of material. To design parts for CNC machining, some guidelines are:<\/p>\n<ul>\n<li><strong>Avoid deep pockets or slots:<\/strong>\u00a0These require longer tools that are more prone to breakage and vibration. They also increase the machining time and cost. To avoid them, reduce the depth or increase the cross-section area of the pocket or slot. As a rule of thumb, the depth should not exceed 3 times the diameter of the tool.<img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.facfox.com\/imgs\/2023\/05\/25\/2d76aea2291871b6.png\" \/><\/li>\n<li><strong>Avoid narrow regions:<\/strong> These restrict the size of the cutter and limit access to the feature. They also increase the risk of tool breakage and vibration. To avoid them, increase the width or reduce the depth of the feature. As a best practice, wall sections should be greater than 0.01 inches thick.<img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.facfox.com\/imgs\/2023\/05\/25\/9d1a19c3fffc6e3b.png\" \/><\/li>\n<li><strong>Avoid sharp internal corners:<\/strong>\u00a0These are impossible to achieve with circular cutting tools, which leave behind a radius in the corner. To avoid them, use a larger radius than the tool diameter or use alternative methods such as EDM or laser cutting.<img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.facfox.com\/imgs\/2023\/05\/25\/a32c54b3fb43f196.png\" \/><\/li>\n<li><strong>Avoid inaccessible features:<\/strong>\u00a0These are features that are blocked by another feature and cannot be reached by the cutting tool. To avoid them, ensure that there is enough clearance for the tool to access all features without interference.<img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.facfox.com\/imgs\/2023\/05\/25\/3e2d5edf1922e87d.png\" \/><\/li>\n<li><strong>Avoid outside fillets:<\/strong>\u00a0These are rounded edges on the top of pockets, bosses, or slots. They require very sharp tools and precise setup, which can be expensive and time-consuming. To avoid them, use chamfers or bevels instead of fillets.<img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.facfox.com\/imgs\/2023\/05\/25\/530885f75fde4ca1.png\" \/><\/li>\n<li><strong>Avoid thin walls:<\/strong>\u00a0These can cause chatter in metals and warping or softening in plastics. They also reduce the strength and stiffness of the part. To avoid them, increase the wall thickness as much as possible. The ideal minimum wall thickness is 0.8 mm for metals and 1.5 mm for plastics.<img decoding=\"async\" src=\"https:\/\/img.facfox.com\/imgs\/2023\/05\/25\/18296663f17a5195.png\" \/><\/li>\n<li><strong>Avoid flat-bottomed holes:<\/strong>\u00a0These require special tools and operations that can cause problems for subsequent operations such as reaming. To avoid them, use standard twist drills to create holes with cone-shaped bottoms.<img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.facfox.com\/imgs\/2023\/05\/25\/5c283a9cbee1c3ea.png\" \/><\/li>\n<li><strong>Avoid non-perpendicular holes:<\/strong>\u00a0These can cause drill tip wandering and uneven exit burrs that are hard to remove. To avoid them, design hole features with start and end faces perpendicular to the drill axis.<img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.facfox.com\/imgs\/2023\/05\/25\/7d97093b90dd3f1c.png\" \/><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>CNC machining design guidelines:\u00a0CNC machining is a subtractive manufacturing technology that uses computer-controlled cutting tools to create custom parts from a solid block of material. To design parts for CNC machining, some guidelines are: Avoid deep pockets or slots:\u00a0These require longer tools that are more prone to breakage and vibration. They also increase the machining [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"kbtopic":[47],"kbtag":[144,54,39,874],"class_list":["post-166329","kb","type-kb","status-publish","hentry","kbtopic-design","kbtag-cnc","kbtag-cnc-machining","kbtag-design","kbtag-design-tips"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.1 (Yoast SEO v27.1.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>8 Important Design Tips for CNC Machining - FacFox Docs<\/title>\n<meta name=\"description\" content=\"Learn how to design parts for CNC machining with these guidelines that cover common design challenges and cost reduction tips.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/facfox.com\/docs\/kb\/8-important-design-tips-for-cnc-machining\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"8 Important Design Tips for CNC Machining\" \/>\n<meta property=\"og:description\" content=\"Learn how to design parts for CNC machining with these guidelines that cover common design challenges and cost reduction tips.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/facfox.com\/docs\/kb\/8-important-design-tips-for-cnc-machining\" \/>\n<meta property=\"og:site_name\" content=\"FacFox Docs\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/facebook.com\/facfox3d\" \/>\n<meta property=\"article:modified_time\" content=\"2023-06-26T03:36:19+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/img.facfox.com\/imgs\/2023\/05\/25\/2d76aea2291871b6.png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@facfox3d\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/facfox.com\/docs\/kb\/8-important-design-tips-for-cnc-machining\",\"url\":\"https:\/\/facfox.com\/docs\/kb\/8-important-design-tips-for-cnc-machining\",\"name\":\"8 Important Design Tips for CNC Machining - 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