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8CNC Router Essentials

2 : Design Essentials

vector designs, bitmaps cannot be read by CAM soware and need to be traced to create useable vector lines. Some CAD soware packages (including VCarve Pro) provide a built-in bitmap to vector line tracing tool. You can even start with a hand sketch. Simply photograph it and import it for tracing. It’s a powerful way to create original hand-drawn CNC project designs.

are also easily read by most CAD programs. Predesigned vector art is also readily available online—some for purchase and some for free. It’s an excellent way to find high-quality designs for CNC projects.

Bitmap images such as colored clipart and high contrast photos provide another starting point for 2-D designs, Image 2.4. Some of the common bitmap file types are .bmp, .jpg, .gif, .tif, and .png. Unlike

Image 2.4: Images saved as bitmap file types provide another starting point for CNC designs. However, they must be traced to create the vector lines in order to create the toolpaths. Some CAD programs make this easy with an auto-tracing feature.

Import

Trace

Vector lines

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Bitmap image