The screenshot shows the user interface for the project settings. © send2cnc.com
Project configuration dialog

Project settings

The project settings are used to define the basic parameters such as unit and resolution for the project.

Units

Voxel

A voxel is the basic, unchangeable unit of send2cnc and can be thought of as a three-dimensional pixel. The toolpath calculation uses the voxel grid. All geometries are interpolated into the voxel grid before calculation, losing details smaller than a voxel.

User unit

Defines the user unit. The selected unit is used primarily for preselecting certain directories (models) and affects certain postprocessors.

Project resolution [vxPerUnit] [unitPerVx]

The project resolution determines the number of voxels per user unit. It defines the level of detail of the calculated toolpath.

Tip:
A suitable project resolution can significantly simplify the workflow. It is recommended to adapt the resolution to the graphics program used. In most graphics programs, print resolutions can be specified in "mm" as well as "inch". This means that length units can be used in the graphics program that can be understood later in send2cnc.

Please note that a high resolution results in a very dense voxel grid. This can lead to longer calculation times and reduce the maximum model size (user units). The following example table lists guidelines that should simplify the handling of the project resolution:

User unit Project resolution Accuracy Model size (approx.)
mm 1 1mm ca. 3.000mm
mm 5 0.2mm ca. 600mm
mm 10 0.1mm ca. 300mm
inch 20 0.05 inch ca. 150 inch
inch 100 0.01 inch ca. 30 inch
inch 300 0.0033 inch ca. 10 inch

The units in relation to the working plane grid of the render window are explained in more detail in the "Render window" chapter.

Project version

Displays the send2cnc version under which the project was last saved.