Extra skin wall count

By using this setting the outermost part of the top/bottom pattern will be replaced by a number of concentric lines. Using one or two lines improves roofs that start on infill material and make sure they come out sturdier and with a smoother surface.

The extra concentric top line is clearly visible.

Make overhang printable

This setting converts all geometry that has a bigger overhang than specified in the 'maximum model angle' setting, to the value set there. This way, shapes of the model are actually altered and the model will look different than intended.

Maximum model angle

The value set here will be used to make all overhangs printable.

Alternate skin rotation

Usually top and bottom layers are printed diagonally, in two different directions every other layer. With alternate skin rotation the direction of the top/bottom layers will alternate between the two diagonal directions and printing in the X or Y direction only. This helps closing the top layer better and decreases the chance of “pillowing”. Please note that this setting only works with a lines and zig zag bottom/top pattern.

Alternate skin rotation visualized.

Conical support

This is an experimental feature that creates support structures which are small at the bottom and wide at the top. Using conical support can save up to 50% of support material. It also has to possibility to print an overhanging support structure over your model, to support parts on top surfaces of the model, without using the option support everywhere.

This model of a chair is supported with conical support.

With the cone angle you can also adjust the angle at which conical support is printed. A higher angle saves more material and allows bigger overhang supports.

The cone minimal width defines the minimal width of the conical support. A too thin support base might not be able to handle all the support that is built on top of it and eventually break. By adjusting the cone minimal width you ensure the support structure doesn’t get unstable.

Enable draft shield

A draft shield will create a one-layer thick wall around the object, which protects it from unwanted airflows from the environment. Especially materials that warp or delaminate easily (e.g. ABS) can benefit from this feature.

This model of a vase uses a draft shield to prevent warping.

There are a few draft shield parameters that can be set:

  • Draft shield X/Y distance: The distance between the draft shield and the object.
  • Draft shield limitation: Allows to print the draft shield at the full height of the object or at limited height.
  • Draft shield height: The height at which the draft shield will be printed when the draft shield limitation is set to limited.

Enable coasting

Coasting replaces the last part of an extrusion path by a travel move. This way excess pressure is released from the nozzle, thus decreasing the chance of material leaking from the nozzle while traveling. Too much combing can however lead to under extrusion as the pressure inside the nozzle drops during the travel move.


When coasting is enabled you can adjust the following parameters:

  • Coasting volume: The volume of material that is coasted.
  • Minimum volume before coasting: The minimum volume an extrusion path should have before allowing coasting.
  • Coasting speed: The speed of the coasting (travel) move as a percentage of the print speed. Since the pressure is released from the nozzle, a value slightly below 100% is advised.

Fuzzy skin

Fuzzy skin prints the outer walls of the model with a jittering motion, to give it a diffused finish. The following parameters can be adjusted for this setting:

  • Fuzzy skin thickness: The maximum distance within which to jitter.
  • Fuzzy skin density: The number of jittering motions per millimeter. It’s also possible to define this by adjusting the fuzzy skin point distance parameter.

Hollow out objects

This setting removes all infill from a model and replaces it with support materials and their corresponding settings.

Tip: Use a pyramid shaped model and remove all bottom layers to create completely hollow models with support.

Wire printing

With wire printing, the object is printed with a mid-air / net-like structure, following the mesh surface. The build plate will move up and down during diagonal segments. This means that the print will solely exists of an outer contour and won’t have any infill. Though not visible in layers view, you can view the result in other software, such as Repetier Host or http://chilipeppr.com/tinyg.