Skip to content

Support

Extruder Tab

Support Extruder

Determines which toolhead is used for printing support material. Select the desired toolhead. In general, we recommend the model material in T0, and support material in T1.

Support Infill Percentage

Determines the grid density of the support structures generated.

The generated support material structure is rectilinear. The denser the grid (ie. the higher the value), the better the support structure performs its purpose. However, this increases both the print time and material usage. Utilizing the Dense Support feature provides a more efficient method of minimizing print time and material usage while providing the necessary support. A good value to start with is 15-25% for the Support Infill Percentage. Taller support structures will require a higher percentage to resist toppling during the printing process.

Extra Inflation Distance

By default (when this value is set to 0), the support structure will only be generated to the very edge of the model. With Extra Inflation Distance set to a non-zero value, the slicer will extend the boundary of the support structure beyond the edge of the model by the specified distance. This ensures that the model material won't "fall off" the edge of the support structure during a print. If the model geometry is such that the generated supports are very narrow, this feature can also be used to artificially thicken the supports, reinforcing it and preventing it from toppling.

Extra Inflation Distance

support structures end at the very edge of the model with no inflation distance

Extra Inflation Distance

support structures extend past the edge of the model with inflation activated

This should generally be set to a value >3mm. In the case of support structures in internal cavities, Simplify3D will not generate support structures that intrude into the model.

Support Base Layers

If you have a print job with tall, thin support structures, they may be liable to topple in the middle of the print without a solid foundation. This feature allows you to print a number of solid infill layers underneath the support structure in order to give it more stability. Set to 0 to disable.

Combine Support

Similar to the Combine Infill feature, this will print the support structure every X number of layers to decrease print times. When printing with a low layer height (eg. 0.10mm), this feature will decrease print times without negatively affecting the quality of the print. Thick layer heights (eg. 0.25mm) with this feature activated (eg. 3 layers) will cause the slicer to attempt printing 0.75mm layer heights for the support which will often fail to print.

Dense Support

Dense Support allows a denser grid fill to be generated only at the support/model interface.

Dense Support Extruder

This allows you to choose the extruder with which to print the dense support layer with. For example, you may want to print the majority of the support structures using the same material as the main model, but only use support material on the other toolhead for the dense support layers.

Dense Support Layers

At least 4 layers is recommended, higher if your Support Infill Percentage is on the lower end to ensure that the Dense Support Layers are able to bridge the gaps between the grid structure effectively and create a solid surface. Set to 0 to disable this feature altogether.

Dense Infill Percentage

Determines the grid density of the Dense Support Layers. Anywhere from 50-80% for this value is recommended. Using breakaway supports, you will want to set this value on the lower end of the range to facilitate removal, while with soluble supports you can increase the density for improved surface finish. 80% results in a nearly solid surface and there is no need to go higher.

Automatic Placement

This setting is essentially a copy of the Support Generation tool in the main Simplify3D workspace. If supports are not generated in the main workspace, these settings will be used instead to automatically generate supports.

Whenever supports are being used, the recommended workflow is to use the Support Generation tool instead to validate support placement, so this setting can be safely ignored.

Separation from Part

These next three settings are useful only with self-supporting prints - ie. The same material is used for both support and model - by creating a separation distance to decrease bonding and facilitate support removal. When using compatible model and support materials, deactivate these settings by setting them all to 0.

Different materials and geometries call for different optimal values. For example, a material like nylon has excellent inter-layer bonding which requires a greater separation to avoid permanently bonded supports, a Carbon Fibre composite will be brittle with less inter-layer bonding allowing for less separation distance for successful support removal.

Horizontal Offset from Part

Determines the distance between the model and support in the horizontal plane. This feature is most relevant for sloped overhang geometries.

Horizontal Offset

With no horizontal offset, the support contacts the model

Horizontal Offset

With horizontal offset, there is a gap between the support and model

Too small of a value and the support will bond too well to the model. Too large of a value and the support will be rendered useless. A good starting point is 2 times your layer height. Go slightly lower the steeper the overhang angle, and vice versa.

Upper Vertical Separation

In addition to the horizontal offset, a vertical separation creates additional spacing purely in the vertical direction between the top of the support structure and the first model layer printed above it. This feature is most relevant for near-90° overhangs and is specified as a multiple of layer height.

Generally, set to 1 or 2 at most.

Lower Vertical Separation

Similar to the above, except creates vertical separation between the upper most layer of the model and the first layer of support printed on top of it. This feature is most relevant for internal features that require support.

Generally, set to 1 when required.

Support Infill Angles

Support structures are generated in a rectilinear pattern. Depending on the orientation of your model and location of the supported surface in co-ordinate space, you can adjust the infill angle to maximize contact points between the model and support structure.


last updated: 03/19/18