# From CAD to CAM

The Buildbotics controller is configured to use metric (mm) units.

## Importing DXF in VCarve Pro

{% hint style="info" %}
A DXF file doesn't specify workspace units. A 1" square drawn in millimeters will be exported as a 25.4 x 25.4. As of version 11, VCarve assumes DXF files are in inches. 
{% endhint %}

* Import the DXF file from your CAD drawing
* Select all the imported entities and **Join Vectors**.
* If needed, rescale the drawing by using **Set Selected Objects Size** in the Transform Objects group, check **Link XY,** and enter <mark style="color:green;">\*i=</mark> in the Width(X) or Width(Y) at the end of the dimension. It will convert the metric dimensions automatically to inches.