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3D printing glossary

The most important terms around 3D printing, design and post-processing – explained briefly and clearly.

0–9

3D Manufacturing Format

DE 3MF

Newer exchange format for 3D printing. Unlike STL, it also stores units, colours, materials and print settings in one file.

3D Printing

DE 3D-Druck

Umbrella term for processes that build a part layer by layer directly from a digital model – without any mould or tooling.

3D Scanning

DE 3D-Scan

Contactless capture of the surface of a real object. The result is a point cloud or mesh that can be further processed into a CAD model.

A

Acrylonitrile Butadiene Styrene

DE ABS

Impact-resistant thermoplastic with more temperature reserve than PLA. Used in FDM printing for housings and technical parts.

Acrylonitrile Styrene Acrylate

DE ASA

Plastic related to ABS that is also UV- and weather-resistant. First choice for FDM parts used outdoors.

Additive Manufacturing (AM)

DE Additive Fertigung

Technical term for industrial 3D printing: material is added selectively instead of being removed as in milling.

Anisotropy

DE Anisotropie

Properties depend on direction. An FDM part is often stronger along the layers than across them – which is why print orientation matters so much.

Assembly

DE Montage

Joining printed parts with screws, inserts, bearings or other components into a finished assembly.

B

Biomimetics

DE Bionik

Transferring design principles from nature to components, such as branched, lightweight load-bearing structures.

Blasting

DE Strahlen

Mechanical surface treatment with fine blasting media. Removes powder residue and creates an even matte finish.

Brim

DE Brim

A flat rim of extra lines around the first FDM layer. It improves adhesion and helps against warping.

Build Orientation

DE Bauorientierung

How a part is positioned in the printer. It affects strength, surface, support requirements and print time.

Build Plate

DE Bauplattform

The surface on which printing starts and to which the part adheres during the build.

Build Volume

DE Bauraum

The maximum space in which a printer can build. Larger parts are split and joined afterwards.

C

Calibration

DE Kalibrierung

Adjusting equipment and measuring instruments to reference values so that dimensions and processes are correct.

Carbon Fiber Reinforced

DE CF-verstärkt

Plastic with blended-in carbon fibres. Stiffer and more dimensionally stable; the reinforcement acts mainly in the strand direction.

Chemical Smoothing

DE Chemisches Glätten

The surface of a plastic part is softened with solvent vapour and flows smooth. Layer lines largely disappear.

Computer-Aided Design

DE CAD

Computer-aided design. The 3D models and drawings we print from are created in CAD.

Contract Manufacturing

DE Lohnfertigung

We manufacture parts from your data on your behalf – from single parts to small series.

D

Depowdering

DE Entpulvern

After SLS or metal printing, the loose powder is removed from the part and from cavities.

Design Engineering

DE Konstruktion

The technical development of a component – from the idea through the CAD model to the drawing.

Design for Additive Manufacturing

DE DfAM

Designing with 3D printing in mind: shaping forms, wall thicknesses and overhangs so that the process can play to its strengths.

Deviation Analysis

DE Soll-Ist-Vergleich

Colour-coded comparison between scan and CAD model that makes deviations on the component visible.

Digital Inventory

DE Digitales Ersatzteillager

Spare parts are stored as files instead of on shelves and only printed when needed.

Digital Light Processing

DE DLP

Resin process in which a projector exposes a whole layer at once. Related to SLA.

Dimensional Accuracy

DE Maßhaltigkeit

How closely the finished part matches the dimensions in the CAD model.

Dip Dyeing

DE Tauchfärben

Dyeing process for porous powder parts (SLS, MJF): the dye penetrates the surface layer permanently.

Dyeing

DE Färben

Colouring 3D printed parts in a dye bath. With porous SLS parts, the dye penetrates the surface layer and lasts permanently.

E

Elephant’s Foot

DE Elefantenfuß

First layers of an FDM part that bulge slightly outwards. A small chamfer on the bottom edge prevents it.

Elongation at Break

DE Bruchdehnung

How far a material can be stretched before it breaks. High values mean tough, forgiving behaviour.

F

Filament

DE Filament

Plastic wire on a spool – the raw material for FDM printing.

Finite Element Analysis

DE FEM-Simulation

Calculation of stresses and deformations on the CAD model before a part is manufactured.

Fit

DE Passung

The interaction of two components: clearance, transition or press fit. Printed parts often require finishing.

Fixture

DE Vorrichtung

Aid that holds a workpiece securely in position during machining, inspection or assembly.

Fused Deposition Modeling

DE FDM

Fused deposition modeling: plastic filament is melted in a nozzle and deposited track by track. Robust and cost-effective.

Fused Filament Fabrication

DE FFF

Another name for the same principle as FDM. Both terms are used interchangeably in everyday practice.

G

Gauge

DE Lehre

Inspection or assembly aid used to quickly check dimensions, positions or hole patterns.

Glass Beads

DE Glaskugeln (GB)

Filler made of small glass beads, e.g. in PA12 GB. It increases stiffness, dimensional accuracy and heat deflection temperature.

Glass Fiber Reinforced

DE GF-verstärkt

Plastic with glass fibres: stiff, temperature-resistant and usually cheaper than CF-reinforced variants.

Gripper Jaw

DE Greiferbacke

Exchangeable contact part of a gripper that is adapted to the respective workpiece – ideal for 3D printing.

H

Heat Deflection Temperature

DE HDT

The temperature at which a test specimen bends under a defined load.

Hollowing

DE Aushöhlen

A solid model is turned into a shell with a defined wall thickness. Saves material, weight and often print time.

Hot End

DE Hotend

The heated part of the FDM print head in which the filament is melted.

I

Infill

DE Füllung

The internal structure of an FDM part. Infill density and pattern determine weight, strength, material consumption and print time.

ISO/ASTM 52900

DE ISO/ASTM 52900

Basic standard of additive manufacturing with terminology and the classification of processes.

ISO/ASTM 52920

DE ISO/ASTM 52920

Standard with requirements for industrial additive manufacturing processes and production sites.

Isotropy

DE Isotropie

Equal properties in all directions. Powder processes such as SLS and MJF come closer to this than FDM.

L

Laser Cutting

DE Laserschnitt

A laser beam cuts sheet material precisely along a contour. For gaskets, panels and templates.

Laser Engraving

DE Lasergravur

A laser removes material at the surface and creates permanent labels, logos or serial numbers.

Laser Powder Bed Fusion

DE L-PBF

Laser powder bed fusion: a laser fuses metal powder layer by layer into a solid component.

Lattice

DE Gitterstruktur

Three-dimensional lattice inside or on the surface of a component. Saves weight and can dampen or stiffen in a targeted way.

Layer

DE Layer

A single slice of a 3D print. Every 3D printed part consists of many layers stacked on top of each other.

Layer Height

DE Schichthöhe

The thickness of a single layer. Thinner layers produce finer surfaces but take longer.

Layer Line

DE Schichtlinie

The fine, visible step between two layers – typical of FDM parts.

Lightweight Design

DE Leichtbau

Components with as little material as possible for the same function – through topology optimisation, lattices or ribs.

Low-Volume Production

DE Kleinserie

A manageable quantity of identical parts. Economical with 3D printing because there are no tooling costs.

M

Mesh

DE Mesh

A net of many small triangles that describes the surface of a 3D model. STL files are meshes.

Metal Additive Manufacturing

DE Metall-3D-Druck

Additive manufacturing from metal powder, such as stainless steel, aluminium or titanium (SLM). For high-strength and lightweight components.

Minimum Wall Thickness

DE Mindestwandstärke

The thinnest wall a process can produce reliably. It depends on process, material and geometry.

Multi Jet Fusion

DE MJF

Powder bed process from HP: a print head applies fusing and detailing agents, a heat source fuses the layer. Delivers dense, uniform series parts.

N

Nesting

DE Nesting

Arranging many parts as densely as possible in the build volume, especially with SLS and MJF – reduces unit costs.

Nozzle

DE Düse

The opening on the FDM print head from which the molten plastic emerges. Its diameter influences level of detail and print speed.

O

On-Demand Manufacturing

DE On-Demand-Fertigung

Parts are only manufactured when they are needed – without stock or minimum quantities.

Orthosis

DE Orthese

Medical aid to support or guide a part of the body. Can be individually adapted via 3D scanning and 3D printing.

Overhang

DE Überhang

An area that protrudes sideways beyond the layer below. Beyond a certain angle it needs supports.

P

Perimeter / Walls

DE Perimeter

The outer contour lines of an FDM part. More perimeters increase strength and tightness.

Point Cloud

DE Punktwolke

The raw data of a 3D scan: millions of individual measuring points on the surface of an object.

Polyamide

DE PA (Nylon)

Tough, abrasion-resistant plastic. As filament in FDM printing, as powder in SLS and MJF printing.

Polyamide 11

DE PA11

Polyamide with high elongation at break for SLS and MJF printing – good for clips and snap fits.

Polyamide 12

DE PA12

The standard material in SLS printing: strong, tough and dimensionally accurate.

Polycarbonate

DE PC

Very strong, temperature-resistant thermoplastic for demanding FDM parts.

Polyethylene Terephthalate Glycol

DE PETG

Tough, chemically resistant filament and a good all-rounder for functional parts.

Polylactic Acid

DE PLA

Easy-to-print, dimensionally stable plastic for samples, models and gauges. Not suitable for heat.

Polypropylene

DE PP

Light, tough and highly chemical-resistant plastic – available in FDM and MJF printing.

Post-Curing

DE Nachhärten

After printing, SLA parts are fully cured with UV light and heat so that they reach their final properties.

Post-Processing

DE Nachbearbeitung

Everything that happens after printing: support removal, cleaning, sanding, inserting threads, engraving.

Powder Bed

DE Pulverbett

The powder layer in which the part is built in SLS and SLM (metal). The loose powder supports the part.

Print Settings

DE Druckparameter

All settings of a print, such as temperature, speed, layer height and infill. They determine quality and strength.

Process Parameters

DE Prozessparameter

Defined settings per material and process that ensure reproducible results.

Production Aids

DE Betriebsmittel

Aids for production such as fixtures, gripper jaws, gauges and assembly aids – a core application of 3D printing.

Prototype

DE Prototyp

Early sample of a component to check form, fit or function before investing in tooling.

R

Raft

DE Raft

An additional base under the actual part that improves adhesion to the build plate.

Rapid Prototyping

DE Rapid Prototyping

Fast production of prototypes directly from CAD data – the classic use of 3D printing.

Rapid Tooling

DE Rapid Tooling

Printed tools and tool inserts, e.g. for small series in injection moulding or as moulds.

Resin

DE Harz

Liquid plastic that cures under light in SLA. There are standard, tough, flexible, transparent and heat-resistant resins.

Reverse Engineering

DE Reverse Engineering

A CAD model is created again from an existing component – e.g. via 3D scanning and redesign.

S

Selective Laser Melting

DE Laserschmelzen (SLM)

Metal 3D printing in which a laser completely melts metal powder – for dense, high-strength components.

Selective Laser Sintering

DE SLS

Selective laser sintering: a laser fuses plastic powder. Works without support structures.

Shore Hardness

DE Shore-Härte

Hardness scale for soft, elastic materials such as TPU: 40A is very soft, 95A already fairly firm.

Shrinkage

DE Schrumpfung

Material contracts when cooling or curing. We take this into account in print preparation and design.

Slicer

DE Slicer

Software that slices a 3D model into layers and generates the control commands for the printer.

Spare Part

DE Ersatzteil

Component that replaces a defective original. With 3D printing, possible even when there is no drawing and no supplier any more.

Stainless Steel

DE Edelstahl

Corrosion-resistant steel used in SLM (metal) for robust machine parts and tools.

Stair-Stepping

DE Treppeneffekt

Steps on inclined or curved surfaces caused by the layer-by-layer build. Thinner layers reduce it.

STEP (ISO 10303)

DE STEP

Standardised CAD exchange format with exact geometry. Our preferred format for enquiries.

Stereolithography

DE SLA

Stereolithography: light cures liquid resin layer by layer. For the finest details and smooth surfaces.

STL

DE STL

Widely used file format that describes the surface of a model with triangles – without units, colour or material.

Support

DE Stützstruktur

Auxiliary geometry that supports overhanging areas during printing and is removed afterwards.

Support Removal

DE Entstützen

Removing the support structures after printing. Part of our post-processing.

Surface Reconstruction

DE Flächenrückführung

Clean, mathematically defined surfaces are created from scan data for an editable CAD model.

Surface Roughness

DE Oberflächenrauheit

Measure of the fine irregularities of a surface. SLA is very smooth, SLS slightly rough, FDM shows layer lines.

T

Tensile Strength

DE Zugfestigkeit

The highest tensile load a material can withstand before it fails.

Thermoplastic

DE Thermoplast

Plastic that softens when heated and solidifies again when cooled. The basis for FDM and SLS.

Thermoplastic Polyurethane

DE TPU

Rubber-like elastic plastic for seals, buffers and grips.

Threaded Insert

DE Gewindeeinsatz

Metal sleeve with an internal thread that is inserted into a plastic part. Ideal for screw connections that are opened frequently.

Titanium

DE Titan

Very strong yet light metal, popular in 3D printing for motorsport and special applications.

Tolerance

DE Toleranz

The permitted deviation of a dimension. Please state important tolerances in your enquiry.

Topology Optimization

DE Topologieoptimierung

Software calculates where a component needs material and where it doesn’t. The result is light, organic-looking shapes.

Traceability

DE Rückverfolgbarkeit

Traceability of material, process and parameters for every manufactured component.

U

UV Printing

DE UV-Druck

Direct printing with ink that cures instantly under UV light. Enables full-colour logos and labels – also as a tactile 3D structure.

V

Vapor Smoothing

DE Vapor Smoothing

Smoothing the surface of plastic parts with solvent vapour; also known as chemical smoothing.

W

Wall Thickness

DE Wandstärke

The distance between the inside and outside of a wall. Too thin becomes unstable, too thick wastes material.

Warping

DE Verzug

Unwanted deformation due to uneven cooling, often at the corners of large flat parts.

Watertight / Manifold

DE Wasserdichtes Modell

A closed 3D model without holes or open edges – a prerequisite for a clean print.

Y

Young’s Modulus

DE E-Modul

Measure of a material’s stiffness: the higher it is, the less the part deforms under load.

Z

Z-Axis

DE Z-Achse

The axis along which the part grows layer by layer in height.

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