Here is a list of some suggestions that designers should keep in mind for obtaining a good 3D print.
- 1. Verify that there are no holes on the surfaces
- 2. Thickness and volume of the wall
When we transform a 3D model through 3D printing, information on the thickness and volume of the wall are necessary.
Many printing problems can be traced back to problems related to the thickness of the walls. The minimum thickness of the wall to be printed depends on the selected material.
- 3. Automatic intersections and overlapping internal surfaces
Overlapping surfaces in the model can render printing difficult. In most cases it is useful to implement a Boolean operation, which is a function that helps unify different overlapping elements.
- 4. Little details and embossed or engraved text.
The details, or the little parts that decorate the 3D object like an embossed or engraved text must have a certain dimension in order to appear on the printing. The exact minimum dimensions strongly depend on the material you are using.
- 5. Empty out the models
An empty model means that the inside of your object will not be solid. Solid projects are not necessarily a problem: they will be stronger and more difficult to break, but they will also be more expensive because more material is used for 3D printing.
If the model is empty, the interior of the printing will be empty too. However, since our printers print layer by layer, the 3D printing material can remain trapped inside the model.
If you want to obtain emptiness inside your model it will be necessary to add “escape holes” in your design. The material not necessary for the creation of 3D printing will then be removed.
- 6. Resolution and dimension of the file
For 3D printing, the most common format is STL (Standard Triangle Language), which means that your drawing will be turned into triangles in a 3D space. The majority of software for 3D printing offers the possibility to export your projects in a STL file and it allows you to set up the desired resolution.