CANADA'S CUSTOM CNC WOOD AND PLASTIC PARTS
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for orders over $250 and not exceeding 24"
cnc design guidelines
PARTS up to 140"X61"
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Check scale
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Confirm units used for measurements
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Ensure at least 5mm between each cut part
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Leave a 20mm margin around - do not use the material as a limit margin
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Verify thickness of material; make sure no cut parts are smaller than thickness of your material
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Make sure there are no overlapping or double lines and that all shapes are outlines.
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You can send us all sheet in 1 file or all sheet thats need to be cut in each thicknesses..
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If you have some engravings or pockets to add please show us by using different colors .
Internal shapes to consider
Dogbones
It’s important to note that inside angles may feature a slight radius due to the round cutting tool used in the process. This radius will be half the diameter of the tool; for instance, with a 3mm router bit, the inside radius will measure 1.5mm.
While outside angles remain unaffected, you can correct the inside radius by filing the corners. However, opting for a smaller router bit to achieve a smaller radius is often the more effective solution if your design permits.
BIRCH 48"x96"
60"x60"
60"x120"
MDF 49"x97"
61"x121"
MAX SIZE 61"x140"
Dogbones are an essential technique in CNC cutting that helps reduce the issue of rounded inside corners caused by router bits. By dogbones, which are specially shaped cutouts, you can achieve cleaner corners, enhancing the overall appearance of your project. For instance, using 1/8 router bits creates specific dogbones on the left side, while the right side showcases the effect with 1/4 router bits., you can opt for less extreme dogbones for a more subtle solution, as demonstrated in the second image.
Dogbones fillets is used to reduce the sharp edges of angles/corners.
Tabs
When utilizing our CNC router, you will notice small fixturing tabs left on the edges of yourined components. These tabs, roughly 0.1875" wide, play a crucial role in ensuring your parts remain secure throughout the manufacturing process.
For optimal, we suggest keeping a minimum of 0.400 between nodes or anchor points. Each tab's depth being half of your selected material thickness can easily be sanded down, and they will not affect your design, ensuring precision and stability during the cutting process.
If you do not use dogbones, your cut will show a 1.576mm inside radius if you are using a 3.175mm bit (1/8) or a 3.175mm insisde radius if you are using a 6.35mm bit (1/4). You will then have to correct manually by hand filing or using a softer sacrificial material like OSB.
Also possible to add a hole on the corner but it is an unnecessary big dogbone added.
If you place your dogbone so it is the minimum necessary size, you will only have an approx 0.5mm slot afterwards which is quite subtle.
You can also compromise accepting a very small corner as shown for different bits size.