3D printing material guide
This page is a general overview of common 3D printing materials and what they are useful for. It is not a print settings guide. Detailed printing notes for each material can be split into separate pages later.
Contents
Quick comparison
| Material | Print difficulty | Stiffness | Toughness | Heat resistance | Outdoor use | Best for |
|---|---|---|---|---|---|---|
| PLA | Easy | High | Low–medium | Low | Poor–medium | Prototypes, visual parts, fixtures, low-stress parts |
| PETG | Easy–medium | Medium | Medium–high | Medium | Medium–good | Functional parts, brackets, enclosures, workshop parts |
| ABS | Medium–hard | Medium | Medium–high | Good | Medium | Durable enclosures, parts that need heat resistance |
| ASA | Medium–hard | Medium | Medium–high | Good | Good | Outdoor parts, UV-resistant functional parts |
| TPU | Medium | Low | High | Medium | Medium–good | Flexible parts, feet, bumpers, seals, grips |
| Nylon / PA | Hard | Medium | High | Good | Medium | Mechanical parts, wear parts, hinges, tough components |
| PC | Hard | High | High | Very good | Medium | Strong, heat-resistant technical parts |
| Carbon/glass filled | Medium–hard | High | Varies | Depends on base material | Depends on base material | Stiff brackets, structural parts, low-warp technical prints |
PLA
PLA is the easiest and most common FDM material. It prints cleanly, holds detail well and is excellent for prototypes, visual models and many low-stress functional parts.
Strengths
- Very easy to print
- Good detail and dimensional accuracy
- Stiff
- Low warping
- Good for fast prototypes
Weaknesses
- Low heat resistance
- Can be brittle
- Not ideal for outdoor long-term use
- Threads and snap features can wear or crack
PLA is often the best first choice when you want to check fit, shape or assembly. It is not the best choice for parts left in hot cars, near motors, in sunlight or under long-term load.
Future detailed page: /3d-print/pla.html
PETG
PETG is a strong all-round material for practical parts. It is less stiff than PLA but usually tougher and more forgiving. It is a good default material for workshop prints.
Strengths
- Tougher than PLA
- Better heat resistance than PLA
- Good layer adhesion
- Good for brackets and enclosures
- More forgiving under impact
Weaknesses
- Can string
- Softer than PLA
- Can be less dimensionally crisp
- Can stick aggressively to some build surfaces
PETG is a strong candidate for general functional printing. It is often a better choice than PLA for parts that need to survive handling, flexing, minor impacts or workshop abuse.
Future detailed page: /3d-print/petg.html
ABS
ABS is a classic engineering plastic with better heat resistance and toughness than PLA. It can be sanded, glued and post-processed more easily than many other filaments.
Strengths
- Good heat resistance
- Tough and practical
- Can be acetone-smoothed
- Good for enclosures and mechanical parts
- Less brittle than PLA
Weaknesses
- Warps more easily
- Prefers enclosed printer
- Produces unpleasant fumes
- Poorer UV resistance than ASA
ABS is useful for parts that need heat resistance and toughness, especially when the printer has an enclosure. ASA is often a better choice for outdoor use.
Future detailed page: /3d-print/abs.html
ASA
ASA is similar to ABS but generally better for outdoor use. It has good UV resistance, decent heat resistance and good mechanical usefulness.
Strengths
- Good UV resistance
- Good outdoor durability
- Good heat resistance
- Useful for covers, brackets and outdoor fixtures
Weaknesses
- Needs more controlled printing than PLA/PETG
- Can warp
- Fumes require ventilation
- Usually more demanding than PETG
ASA is a strong candidate for outdoor brackets, covers and functional parts exposed to sunlight.
Future detailed page: /3d-print/asa.html
TPU / flexible filaments
TPU is flexible and tough. It is used when a part needs to bend, grip, absorb vibration or act as a soft interface between harder parts.
Strengths
- Flexible
- Impact resistant
- Good for feet, bumpers and grips
- Can absorb vibration
- Good wear resistance in many uses
Weaknesses
- More difficult to print cleanly
- Can be slow to print
- Dimensional accuracy can be less crisp
- Not good for rigid structural parts
TPU is not a replacement for rigid plastic. It is best when flexibility is the feature, not a problem to work around.
Future detailed page: /3d-print/tpu.html
Nylon / PA
Nylon, often called PA, is tough, wear-resistant and mechanically useful. It is excellent for many functional parts, but it is more demanding than PLA, PETG, ABS or ASA.
Strengths
- Very tough
- Good wear resistance
- Good for hinges and moving parts
- Useful for mechanical components
- Less brittle than many common materials
Weaknesses
- Absorbs moisture
- Requires drying
- Can warp
- More demanding to print
- Can be too flexible for some structural parts
Nylon is a strong option when toughness and wear resistance matter more than perfect stiffness or easy printing.
Future detailed page: /3d-print/nylon.html
Polycarbonate / PC
Polycarbonate is strong, tough and heat resistant. It is a serious technical material, but it requires a capable printer and controlled conditions.
Strengths
- High strength
- High toughness
- Very good heat resistance
- Useful for demanding technical parts
Weaknesses
- Difficult to print
- Needs high temperatures
- Can warp
- Moisture sensitive
- Not ideal for casual printing
PC is best saved for parts that actually need its properties. For many normal parts, PETG, ABS, ASA or nylon may be easier and good enough.
Future detailed page: /3d-print/pc.html
Filled and composite filaments
Filled filaments use a base material such as PLA, PETG, nylon or PC mixed with carbon fiber, glass fiber, wood, metal powder or other fillers.
| Type | Typical effect | Notes |
|---|---|---|
| Carbon fiber filled | Stiffer, often less warping, matte technical surface | Abrasive. Use hardened nozzle. Can be more brittle depending on base material. |
| Glass fiber filled | Stiffer and tougher than unfilled base material in some cases | Abrasive. Good for technical parts if the printer can handle it. |
| Wood filled | Wood-like appearance and texture | Mostly aesthetic. Can clog smaller nozzles. |
| Metal filled | Heavy, metallic look, can be polished | Mostly aesthetic. Very abrasive and dense. |
Support materials
Support materials are used to make overhangs, interfaces or soluble support structures easier to remove. Some are dedicated support materials, while others are normal materials used as a support interface for another material.
| Support material | Typical use | Notes |
|---|---|---|
| PVA | Water-soluble support | Moisture sensitive, expensive, useful for complex geometry |
| BVOH | Water-soluble support | Often dissolves better than PVA, but is still sensitive and costly |
| HIPS | Support for ABS | Can be dissolved in limonene, but less common in simple workflows |
| PETG as support interface for PLA | Breakaway support interface | PLA and PETG do not bond strongly to each other, which can help support removal |
| PLA as support interface for PETG | Breakaway support interface | Useful in some multi-material setups, but needs tuning |
Choosing the right material
A simple way to choose material is to start with the most forgiving option that satisfies the job. Do not use a difficult material just because it sounds more advanced.
| Need | Good starting material |
|---|---|
| Fast prototype or shape test | PLA |
| General functional workshop part | PETG |
| Enclosure with some heat resistance | ABS or ASA |
| Outdoor part | ASA |
| Flexible foot, bumper or grip | TPU |
| Wear-resistant mechanical part | Nylon / PA |
| High heat and high strength | PC, PC blend or suitable engineering filament |
| Very stiff technical part | Carbon fiber filled nylon, PETG, PC or similar base material |
Quick summary
- PLA is the easiest and best for quick prototypes.
- PETG is a strong general-purpose workshop material.
- ABS is useful when heat resistance and post-processing matter.
- ASA is often the better ABS-like choice for outdoor use.
- TPU is for flexible and impact-absorbing parts.
- Nylon is tough and wear-resistant but needs drying and better process control.
- PC is strong and heat resistant, but not casual-mode printing.
- Filled materials can be excellent, but may require hardened nozzles and more tuning.
Last updated manually. Material behavior depends strongly on brand, formulation, printer and print settings.