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Using GENESIS Hatching

In 5 steps from your STL model to a CLI-File.

Open / Import STL

The first step is to open the geometry files. Click the first "Open" button on the right side to get to the open dialog and select the model or part file. If the file needs supports, import them using second "Open" button below. To proceed to the next step you can always either push the "Next" button in the lower right or click on the second step "Preset" in the top bar.-->

To proceed to the next step you can just select the second step "Preset" in the top bar.

GENESIS Import Step 1: Import STL-files of the part and supports (optional).

GENESIS Import Open file dialog.

Printer Preset

The second step is to select a printer "Preset" from the drop down menu and define the overall layer thickness in the field below.

The layer thickness is used for slicing the 3D model into 2D layers. But also for the automatic meshing of model for the simulation-based hatchings.

Furthermore you can enable and set the global gas flow direction. This direction is used for the optimal orientation and sequence of the hatches agains the gas flow in the chamber. The exclusion angle forbids orientations of hatches within that range around the gas flow direction completely.

GENESIS Preset Step 2: Select a printer preset and choose the overall layer thickness.

After clicking on the next "Part" step in the top bar, the program will calculate the slices in the background. The process is shown in the progress bar at the bottom.

Hatching Parameter

The third step is the choice of hatching parameters for the part. Currently the following strategies are available:

Conventional Strategies Explanation
Unidirectional / Linear Straight path with same orientation
Islands / Checkerboard Squares with alternating orientation (90°)
Stripes Stripes with same orientation
Brick Unidirectional hatches stacked with offset
Simulation-based Strategies (only available in Advanced Version)
Hexagon-based Hexagon islands with distortion reducing orientation
Triangle-based Stripes with optimal orientation for reduced distortion

List of hatching strategies.

After selecting an overall hatching strategy one can define the detailed hatching parameter. GENESIS Part Step 3: Hatching strategy and parameter for the part.

The following parameters can be defined (illustration see below):

Parameter Explanation
Hatch Distance [mm] Distance between hatches in mm
Bidirectional Hatches Alternating direction of scan vectors. Checkbox
Layer Rotation [°] Rotation angle between two layers in degree
Start Angle [°] Initial orientation in degree
Number of Contours Contour number
Contour Offset [mm] Offset between part contour and outer most contour scan in mm
Contour Distance [mm] Distance between contour scans in mm
Contour to Hatch Distance [mm] Distance between inner most contour scan and hatch area in mm
Island Size [No. of Hatches] Section size defined by number of hatches within a section. Stripes strategy allows any length in mm.
Island Distance [mm] Distance between individual sections / islands in mm
Random Order Random order of sections / islands. Checkbox

List of hatching parameter.

Layer Thickness and Rotation Schematic of the layer thickness and rotation.

Hatch Parameter Schematic of distances between the scan vectors.

The fourth step is similar to the third step and is only necessary if a support file was previously imported. GENESIS Supports Step 4: Hatching strategy and parameter for the supports (optional).

By clicking on the last "Hatching" step in the top bar, the program will calculate the individual hatches in the background. The progress takes some time depending on the chosen strategy.

Conventional vs. Simulation-based Hatchings

To better understand the program workflow and background processes a comparison of the generation of conventional hatchings and simulation-based hatching strategies is shown below. GENESIS Workflow Background tasks during hatching process.

For conventional strategies, only the individual paths need to be generated. For the use of simulation-based hatching strategies, the geometry will be meshed and simulated automatically. This process can take a while depending on the selected layer thickness.

Conventional strategies are static and only defined by the pattern parameter. Simulation-based hatchings are part individual and consider the local geometry.

Preview Hatchings and Export CLI

In fifth step the generated hatchings can be inspected. Use the vertical slider to scroll through all generated layers. The colors of the hatches indicate the sequence (first: blue, last: orange). With the time slider it is possible to animate the scan process of the current layer.

GENESIS Hatchings Step 5: Preview the generated hatchings and export a CLI-file.

Export CLI

Switch to the hatching step if you are not already in the last pane. Then just push the "Export CLI" button in the lower right area and choose an appropriate file name and location in the file dialog.