3D Printing @ North Forest DAC: Slice

Slicing takes the graphical information from your model and converts it into instructions for the 3D printer to follow. Most 3D printers use an instruction set called G-code. G-code is also used on industrial manufacturing equipment.

Because each 3D printer is a little different, you can not use the G-code created for one model printer on a different model.

Because there are many choices when slicing, library staff will help you with this step.

Infill

While 3D printed object may feel solid, internally they are mostly hollow. A scaffold of material insures structural integrity. This internal structure is called infill, and the about used is called infill density. Infill density can range from 100% (a solid piece of material) to 0% (no infill at all). Most slicers use a default of 20% infill density. This works for most applications and strikes a good balance between strength and efficiently.

Support

While structures, like arches, are stable once completely printed, during printing they may need support. Slicers can detect such structures and insert temporary support structures. After printing, these structures can be easily removed.

Build Plate Adhesion

For most models and materials, you should not need to use build plate adhesion or only need a skirt. But when working with some types of materials or complicated models, you may need other temporary structures to help the first layers of the print to stick to the printer.

Skirt

A skirt is an outline of the objects footprint. Skirts are useful in assessing correct setting for the filament and judging if the first layer of the print will stick. Skirts can also help in priming the printer.

Brim

This prints a thin layer of material around the model, resembling a brim on a hat. After printing, the brim can be easily removed. Brims can help prevent edges curling up.

Raft

For certain materials, a raft may be necessary. A thin layer of material is printed out and on top of the material the model is then printed. After printing, the raft can be removed.