A Glossary Built Around Real Printing
A useful 3D printing glossary explains the words that appear when a print succeeds or fails. Terms like layer height, infill, nozzle, resin, SLS, STL, clearance, and support are not trivia. They describe decisions that change the finished part.
A Glossary Built Around Real Printing
A useful 3D printing glossary explains the words that appear when a print succeeds or fails. Terms like layer height, infill, nozzle, resin, SLS, STL, clearance, and support are not trivia. They describe decisions that change the finished part.
The best way to learn the glossary is by category: process terms, machine terms, material terms, slicer terms, design terms, and troubleshooting terms.
Process Terms
Additive manufacturing means building objects by adding material. FDM or FFF uses melted filament. SLA, MSLA, and DLP cure liquid resin with light. SLS and MJF fuse polymer powder. Binder jetting, material jetting, and directed energy deposition serve other industrial uses.
Knowing the process tells you what material, support strategy, surface finish, and safety workflow to expect.
Machine Terms
The build volume is the maximum printable area. The build plate holds the print. The hotend melts filament, the nozzle shapes the extrusion path, and the extruder pushes material. Belts, rods, rails, motors, fans, and sensors control motion and temperature.
Machine terms help diagnose failures. A layer shift can point to belts or motion. Heat creep can point to hotend cooling. Poor adhesion can point to bed setup.
Slicer Terms
A slicer creates G-code or process instructions. Layer height controls vertical resolution. Infill builds internal structure. Perimeters or walls define the shell. Retraction controls oozing. Supports hold overhangs. Brims and rafts improve adhesion.
Slicer settings are not decorations. Each one changes time, surface, strength, fit, or cleanup.
Design Terms
CAD creates measured models. Mesh tools edit surface geometry. STL, OBJ, and 3MF are common file formats. Manifold means the mesh is closed cleanly. Wall thickness, clearance, fillet, chamfer, boss, insert, snap fit, and lattice describe features that affect printability.
DfAM means design for additive manufacturing. It is the practice of designing around the printer’s strengths and limits.
Troubleshooting Terms
Stringing, warping, elephant’s foot, ringing, under-extrusion, over-extrusion, clogging, delamination, bridging failure, pillowing, and layer shift are common print defects. Each defect points to likely causes.
Once you can name the defect, help guides and community answers become much easier to use.
FAQ
What 3D printing term should beginners learn first?
Layer height, infill, supports, nozzle, bed adhesion, slicer, and filament are the most useful early terms.
What is G-code?
G-code is the machine instruction file used by many printers, especially FDM printers, to control movement, temperature, and extrusion.
What does manifold mean in 3D printing?
A manifold model is a clean closed mesh that a slicer can interpret as a solid object.
