3D printing and CAD terms
How a 3D model becomes a physical object: designing parts precisely in CAD, preparing the model for a printer, and the settings that decide strength, detail and print time.
Beginner 3D printing and CAD terms
- 3D print supportsTemporary scaffolding that holds up overhangs while a model prints
- 3D printingBuilding a real object layer by layer from a 3D model
- CAD (computer-aided design)Software for modeling objects with exact measurements, ready to manufacture
- FDM printingThe common home method that builds parts from melted plastic filament
- InfillThe hidden pattern a printer builds inside a part instead of solid plastic
- Layer heightHow thick each printed layer is, trading speed against smoothness
- SlicerThe program that turns a 3D model into layer-by-layer print instructions
Intermediate 3D printing and CAD terms
More 3D glossary topics
3D printing and CAD terms FAQ
What file format do 3D printers use?
Slicers take STL or 3MF files and turn them into G-code, the instructions the printer follows. STL is the long-standing standard; 3MF also keeps units, colors and multiple parts.
What infill percentage should I use?
As a rule of thumb, around 15 to 20 percent suits most display prints, and parts that carry load often use 40 percent or more. Higher infill adds strength but also print time and material.
Can I 3D print a model made for games or animation?
Often, after some prep. It must be one closed, watertight mesh with real thickness, scaled to real size. Game models often have open edges or paper-thin parts that need fixing first.