Simplify 3D
Slicing Best Practices

First make sure you have the right profile for your material

This tutorial goes through main points to achieve successful prints quickly and easily.
Its best practice to evaluate the 3D model for the following features and enable slicer settings as follows when necessary.


Infill of object impact on length of printing time and on strength of material. On one hand higher infill percentage increases strength of part, while on other hand low infill percentage decrease the length of printing time.

You can increase or decrease infill percentage by the slider. It is important to note how the infill affects the print time.

Part orientation

Printing time length is affected by the following points:

  1. Orientation of object. As in example, only by rotating object printing time reduces drastically.
  2. Remove unnecessary support.
  3. Infill percentage. In big parts, decreasing infill percentage reduces printing time in huge.

Support type

Support are created to support part which has large overhang.

Theses are two type of support.

  1. Support type: From Build plate only This type of support is created only from bed to supported area.
  2. Support type: Normal In normal support type, support is created both from bedplate and from part itself to supported area. Support leaves marks on part after removing it.

If possible, it is best to minimize supported area.

  • By changing orientation of object. If by changing orientation overhang angle can be reduces under 55 degree, no need to generate support.
  • On the right side of page icon. You can generate support manually, and remove unnecessary supports.

As shown in figure, it's not necessary to have support if overhang angle is not bigger than 55 degree.

Supports - Sharp corners facing the print bed

Make sure part is oriented so that there a stable point to start printing. Usually it is the largest straight surface area of the 3D model.

If no flat spots are available in the model, it is possible to drop the model inside the plate to create such spot or modify the model in CAD software to include flat spots.

Generally it is problematic to start a print from a sharp corner, because the slicing software may not recognize them properly as a starting layer. By adjusting z offset (double)


It is recommended to use raft on parts. It highly helps to remove part from bed easily.

The crucial point of raft is separation distances of part from raft. Default value for XPLA is 0,08mm and it is readily set in the printing profiles. Lowering the value makes part stick more to raft and increasing the value makes part less sticking to raft.

Thin walls and complex parts

In cases of thin wall models, you need to inspect model in preview of simplify3d. As shown in figure 1., gap may form between the walls.

Gaps are formed when there is not enough spaces to draw another line. The software doesn't detect the missing material. Most of the time, decreasing perimeters amount will fill the gaps.


Retraction at start and end point create seam line. It is possible to make visually less impact by placing on sharpest corner or unfocused side of object.

Put the value of X and Y coordinate where it is most suitable places for seam.

Printing one object at a time helps to reduces number of retraction and as a result makes a less visible seam-line.

Key points

  • If you make changes on settings, save it as new profile. Do not update default settings.
  • You can always re-import the original .fff profiles if there is some mistake in settings.