Is 3D Printed Stuff Plastic? The Shocking Truth (2026) 🤯

Remember the first time you held a warm, slightly flexible 3D printed object and wondered if it was just another piece of disposable trash? You aren’t alone. For years, the world assumed 3D printing was synonymous with melting plastic toys destined for the landfill, but the reality is far more complex—and fascinating. While your average hobbyist print is indeed made of thermoplastics like PLA or PETG, the technology has quietly evolved to forge titanium jet engine parts, concrete skyscrapers, and even biocompatible medical implants. In this deep dive, we’ll expose why your car dashboard might melt a PLA print but a carbon-fiber composite could survive a rocket launch, and we’ll reveal the surprising material that’s stronger than steel yet lighter than aluminum.

Key Takeaways

Most, but not all: The vast majority of consumer 3D prints are thermoplastics (PLA, ABS, PETG) or photopolymers (resin), but industrial printers now routinely use metals, ceramics, and concrete.
Durability depends on material: Not all plastics are created equal; PLA melts in hot cars, while Nylon and PEK can withstand extreme heat and chemical stress.

Anisotropy matters: 3D printed parts are often weaker along the Z-axis (layer lines) than traditional manufacturing, but proper orientation and continuous fiber reinforcement can overcome this.
Eco-friendly options exist: Bioplastics like PHA and recycled filaments are making the industry more sustainable, though industrial composting is often required for PLA to break down.
Safety first: Always verify material properties before printing functional parts; ABS and resins require specific ventilation and handling precautions.

⚡️ Quick Tips and Facts
📜 The Evolution of Additive Manufacturing Materials
🧪 Is 3D Printed Stuff Plastic? The Core Answer
🔥 FDM Printing: The Plastic Heavyweights
💡 SLA/DLP Printing: Resins and Photopolymers
🏗️ Beyond Plastic: Metals, Ceramics, and Composites
🌿 Eco-Friendly Options: Bioplastics and Recycled Filaments
🛡️ Durability Check: Will Your Prints Melt or Disintegrate?
🔬 Material Properties: Strength, Flexibility, and Heat Resistance

🎨 Aesthetic Considerations: Finish, Color, and Transparency
🔧 Post-Processing: Turning Raw Prints into Finished Goods
🔍 Identifying Your Print Material: A Guide for Beginners
🚫 Common Myths About 3D Printed Materials Debunked

📊 Comparison Table: Plastic vs. Non-Plastic 3D Printing Materials
🏆 The Imperium of Man: Best Materials for Specific Use Cases

💡 Pro Tips for Choosing the Right Material
📚 Recommended Links for Further Reading
❓ Frequently Asked Questions
🔗 Reference Links

Quick Tips and Facts

Let’s cut through the noise right now, because we know you’re probably holding a warm, slightly sticky object in your hand and wondering, “Is this actually plastic?” 🤔

Here is the TL;DR for our team at 3D Printed™:

✅ Most Common: Yes, the vast majority of hobbyist 3D prints are thermoplastics (PLA, ABS, PETG).
✅ Not Just Plastic: Industrial and pro-sumer printers use metals (Titanium, Steel), ceramics, concrete, and even food-grade chocolate. 🍫
✅ Resin is Different: SLA/DLP printers use photopolymers (liquid resin) that cure into hard plastic-like solids. It’s technically a polymer, but chemically distinct from filament.

❌ Myth: “All 3D printed items are weak.” Fact: Carbon-fiber infused Nylon or continuous fiber composites can be stronger than aluminum in specific orientations.
⚠️ Heat Warning: PLA melts at ~60°C (140°F). Your car dashboard in summer? Not a safe place for a PLA print. 🚗🔥

The Evolution of Additive Manufacturing Materials

Video: The Rise of 3D-Printed Slop.

When we first started tinkering with 3D printers in the early 2010s, the material palette was about as wide as a single sheet of copy paper. We were all chasing that sweet spot of affordability and ease of use. But the landscape has shifted dramatically.

From Protyping to Production

Originally, 3D printing was strictly for rapid protyping. Engineers would print a rough plastic model to check fitment, then discard it. The materials were limited to basic ABS or PLA because they were cheap and easy to extrude.

However, as technology advanced, so did the materials. We’ve moved from simple desktop extruders to industrial sintering and binder jeting. Today, you can print a titanium hip implant or a concrete house foundation. The definition of “3D printed stuff” has expanded from “plastic toys” to “functional, end-use components.”

The Material Explosion

Era	Primary Materials	Typical Use Case
Early 20s	ABS, Nylon	Functional prototypes, jigs
2010s	PLA, PETG, Resin	Hobbyist models, dental molds
2020s	Carbon-fiber Nylon, PEEK, Metal Powders, Ceramics	Aerospace parts, medical implants, jewelry

The shift wasn’t just about what we could print, but why. We stopped printing just to see if it worked and started printing because it was the only way to make it.

Is 3D Printed Stuff Plastic? The Core Answer

Video: The Epidemic of 3D Printed Junk.

So, back to the big question: Is 3D printed stuff plastic?

The short answer is: Usually, yes. But with a massive asterisk. 📝

If you bought a Creality Ender 3 or a Prusa i3, you are almost certainly printing with thermoplastics. These are polymers that become pliable or moldable above a specific temperature and solidify upon cooling.

However, if you walk into a Stratasys facility or a Desktop Metal shop, you are looking at metal powder or ceramic slurry. These are not plastics. They are sintered or fused materials that mimic metal or stone properties.

The Chemical Breakdown

To understand if your print is “plastic,” we need to look at the polymer chains.

Thermoplastics (FDM/FFF): These have linear polymer chains. Think of them like cooked spaghetti. You can heat them up, reshape them, and cool them down repeatedly. This is why PLA and ABS are recyclable (theoretically).

Thermosets (SLA/DLP Resin): These start as liquid monomers. When exposed to UV light, they undergo a chemical reaction called polymerization, forming cross-linked networks. Once cured, you cannot melt them back down. They are “plastic” in the colloquial sense, but chemically, they are more like epoxy.
Non-Polymers: Metal printing (DMLS/SLM) uses metal powders (e.g., AlSi10Mg). Ceramic printing uses clay sluries. These are inorganic materials.

Key Takeaway: If it melts when you hold a lighter to it, it’s likely a thermoplastic. If it chars and burns, it might be a thermoset resin or a natural fiber composite. If it sparks, it’s metal. 🔥

FDM Printing: The Plastic Heavyweights

Video: I Tested VIRAL 3D Prints! – Are They Worth It?

For 90% of hobbyists, Fused Deposition Modeling (FDM) is the gateway drug. This is where you feed a spool of filament into a hotend, which melts it and extrudes it layer by layer.

The Big Three: PLA, ABS, PETG

1. PLA (Polylactic Acid)

What is it? Derived from corn starch or sugarcane. It’s a bioplastic. 🌽
Pros: Easy to print, low warping, huge color variety, biodegradable industrial composters.

Cons: Low heat resistance (deforms in a hot car), brittle.
Best For: Decorative models, prototypes, cosplay props.

2. ABS (Acrylonitrile Butadiene Styrene)

What is it? The classic engineering plastic. Used in LEGO bricks! 🧱
Pros: Strong, durable, can be smoothed with acetone vapor.
Cons: High warping, requires an enclosed bed, releases styrene fumes (smells like burning plastic).

Best For: Functional parts, automotive interiors, enclosures.

3. PETG (Polyethylene Terephthalate Glycol)

What is it? The same material as water bottles. ♻️
Pros: Strong, flexible, chemical resistant, easier to print than ABS.
Cons: String (needs tuning), can be sticky.
Best For: Mechanical parts, outdoor use, food-safe containers (with caution).

Advanced FDM Materials

We’ve moved beyond the basics. Here are the heavy hitters we recommend for serious projects:

Nylon (PA6/PA12): Extremely tough and flexible. Used for hinges and living joints.
TPU (Thermoplastic Polyurethane): A flexible rubber-like filament. Great for phone cases and gaskets.

Carbon-Fiber Filled Nylon: Adds short carbon fibers to Nylon for stiffness and strength. It’s like printing with Kevlar. 🛡️

SLA/DLP Printing: Resins and Photopolymers

Video: 50+ Useful 3D Prints You Never Knew You Could Print.

If FDM is the muscle, Stereolithography (SLA) is the artist. This technology uses a UV laser or projector to cure liquid resin into solid plastic.

The Resin Spectrum

Resin Type	Characteristics	Use Case
Standard Resin	Britle, high detail	Miniatures, figurines
Tough Resin	ABS-like strength	Functional prototypes
Flexible Resin	Rubber-like	Gaskets, grips
Castable Resin	Burns out cleanly	Jewelry casting
Dental Resin	Biocompatible	Aligners, crowns

Why Choose Resin?

The detail is unmatched. While FDM prints have visible layer lines, SLA prints can be smooth enough to skip sanding. The resolution is measured in microns, not millimeters.

⚠️ Safety Warning: Liquid resin is a skin irritant and potentially toxic. Always wear nitrile gloves and a respirator. We’ve seen too many hobbyists skip PE and end up with chemical burns. 🧤

Beyond Plastic: Metals, Ceramics, and Composites

Video: DANGEROUS 3D Prints…

This is where the “Is it plastic?” question gets really interesting.

Metal 3D Printing

Metal printing doesn’t use plastic as the primary material. It uses metal powders (Titanium, Inconel, Stainless Steel) or metal-filled filaments (bound metal deposition).

DMLS/SLM (Direct Metal Laser Sintering): A high-power laser fuses metal powder particles together. The result is a dense, isotropic metal part that can be heat-treated and machined.
Binder Jeting: A liquid binder is sprayed onto metal powder, which is then sintered in a furnace.

Real-World Example: GE Aviation prints fuel nozzles for the LEAP engine using DMLS. It’s a single piece of stainless steel, not plastic. 🚀

Ceramic 3D Printing

Ceramics are printed using sluries (clay mixed with water and binders) or powder bed techniques.

Applications: Dental crowns, heat exchangers, and artistic sculptures.
Process: The printed part is “green” (fragile) and must be fired in a kiln at high temperatures to become dense and strong.

Concrete and Composite Printing

Concrete: Large-scale printers like COBOD print houses layer by layer using a specialized cement mix. It’s not plastic; it’s construction material. 🏠

Composites: Materials like Onyx (Stratasys) use nylon infused with short carbon fibers. It’s a polymer matrix, but the performance is that of a composite metal.

Eco-Friendly Options: Bioplastics and Recycled Filaments

Video: The BEST 3D printing material? Comparing PLA, PETG & ASA (ABS) – feat. PRUSAMENT by Josef Prusa.

We can’t talk about 3D printing materials without addressing the environmental impact. The video mentioned in our research highlights the frustration of “plastic fingermajigs” ending up in landfills. 🗑️

Biodegradable Filaments

PLA: Made from renewable resources. It is biodegradable only industrial composting facilities (high heat, specific microbes). It will not decompose in your backyard compost bin.

PHA (Polyhydroxyalkanoates): A newer bioplastic that degrades in marine environments.

Recycled Filaments

We are seeing a rise in filament recyclers like the Filabot or Precious Plastic shreds. These machines take old PLA prints and turn them back into filament.

Pro Tip: Check out our guide on 10 Best Biodegradable 3D Printer Filaments to Try in 2025 🌿 for a deep dive into sustainable materials.

The Recycling Challenge

Most 3D printed parts are not easily recyclable in curbside bins because they are mixed materials (e.g., PLA/ABS blends) or contain additives. Mechanical recycling (shredding and re-extruding) is the most viable option for hobbyists.

Durability Check: Will Your Prints Melt or Disintegrate?

Video: The 5 Filament Types You Need to Know (And What They’re Good For).

A common fear is: “Will my 3D printed item fall apart in a year?”

UV Degradation

PLA: Degrades slowly in UV light. It becomes brittle and yellow.

ABS: Degrades rapidly in UV light. It turns white and crumbles. Always paint or coat ABS for outdoor use.
PETG: Good UV resistance. Suitable for outdoor applications.

Heat Resistance

Material	Glass Transition Temp (°C)	Max Use Temp (°C)
PLA	~60°C	~45°C
PETG	~80°C	~70°C
ABS	~105°C	~80°C
Nylon	~120°C	~10°C
PEK	~143°C	~120°C+

Anecdote: We once printed a PLA gear shift knob for a car. It melted on the first hot day. Lesson learned: Never use PLA for automotive interiors. 🚗💨

Chemical Resistance

PLA: Resistant to water and mild acids. Dissolves in chloroform.

ABS: Dissolves in acetone. Resistant to oils and greases.
Nylon: Absorbs water (hygroscopic), which can weaken it. Resistant to many chemicals.

Material Properties: Strength, Flexibility, and Heat Resistance

Understanding the anisotropic nature of FDM printing is crucial. The strength of a 3D printed part depends heavily on the print orientation.

Layer Adhesion vs. Intra-layer Strength

Intra-layer: Strong along the X/Y axis (within the layer).
Inter-layer: Weaker along the Z axis (between layers).

Tip: Orient your prints so that the primary stress is parallel to the layers, not perpendicular to them. For example, a bracket should be printed flat, not standing up.

Flexibility

TPU: Can bend up to 60% strain.
Nylon: High impact resistance.
PLA: Britle. Breaks under stress.

Heat Deflection Temperature (HDT)

This is the temperature at which a material deforms under load. For functional parts, always check the HDT datasheet. PEK and ULTEM are used in aerospace because they withstand extreme heat.

Aesthetic Considerations: Finish, Color, and Transparency

Surface Finish

FDM: Visible layer lines. Can be sanded, filled, and painted.
SLA: Smooth, glossy finish. Can be polished to a high shine.

SLS (Selective Laser Sintering): Slightly rough, matte finish. No support marks.

Color Options

PLA: Infinite colors.
Resin: Limited to translucent or opaque colors.
Metal: Can be dyed or anodized after printing.

Transparency

Clear PLA/PETG: Semi-transparent.
Clear Resin: Can be polished to glass-like transparency.
Metal/Ceramic: Opaque.

Post-Processing: Turning Raw Prints into Finished Goods

A raw 3D print is rarely the final product. Post-processing is where the magic happens.

FDM Post-Processing

Support Removal: Use nippers and pliers.
Sanding: Start with 120 grit, move to 10 grit.
Chemical Smoothing: Use acetone for ABS or ethyl acetate for PLA. ⚠️ Ventilation Required!

Painting: Use primer and spray paint.

SLA Post-Processing

Washing: Use IPA (Isopropyl Alcohol) to remove uncured resin.
Curing: UV curing station to fully harden the part.
Support Removal: Careful cutting to avoid surface damage.

Metal Post-Processing

Support Removal: CNC machining or wire EDM.
Heat Treatment: To relieve internal stresses.
Surface Finishing: Bead blasting, polishing, or coating.

Identifying Your Print Material: A Guide for Beginners

How do you know what you’re holding?

The Burn Test (Use with Caution!)

PLA: Smells like sweet corn. Burns with a yellow flame.
ABS: Smells like burning plastic. Burns with a black smoke.
Nylon: Smells like burning hair. Self-extinguishes.
PETG: Smells like sweet, chemical. Drips while burning.

The Solvent Test

ABS: Dissolves in acetone.
PLA: Dissolves in dichloromethane (not safe for home).
PETG: Resistant to most solvents.

Visual Inspection

Layer Lines: FDM.
Smooth/Glossy: SLA.
Rough/Matte: SLS.
Metalic/Shiny: Metal.

Common Myths About 3D Printed Materials Debunked

Myth 1: “3D printed plastic is weak.”

Fact: Carbon-fiber reinforced Nylon is stronger than aluminum by weight. The weakness comes from layer adhesion, not the material itself.

Myth 2: “All 3D printed items are toxic.”

Fact: PLA is non-toxic. PETG is food-safe (with caveats). Only ABS and Resin require strict handling precautions.

Myth 3: “3D printing is just for toys.”

Fact: Aerospace, medical, and automotive industries rely on 3D printed parts for critical functions.

Comparison Table: Plastic vs. Non-Plastic 3D Printing Materials

Feature	FDM (Plastic)	SLA (Resin)	DMLS (Metal)	SLS (Nylon)
Material	Thermoplastic	Photopolymer	Metal Powder	Nylon Powder
Strength	Moderate	Low (Britle)	High	High
Detail	Low	High	Medium	Medium
Cost	Low	Medium	High	High
Durability	Variable	Low	High	High
Recyclability	High	Low	Low	Low

The Imperium of Man: Best Materials for Specific Use Cases

(Note: “The Imperium of Man” is a reference to the Warhammer 40k universe, often used in gaming communities. We’ll use this section to recommend materials for specific “factions” or use cases.)

For the Miniature Painter (Gaming)

Material: Standard Resin or Tough Resin.
Why: High detail for intricate armor and weapons.
Brand: Phrozen, Anycubic.

For the Engineer (Functional Parts)

Material: Carbon-Fiber Nylon or PEK.
Why: Strength and heat resistance.
Brand: Markforged, Stratasys.

For the Eco-Warior (Sustainability)

Material: Recycled PLA or PHA.
Why: Biodegradable and low carbon footprint.
Brand: ColorFabb, Filament.ca.

For the Artist (Sculpture)

Material: Wax Resin or Ceramic.
Why: Smooth finish for casting or firing.
Brand: Formlabs, ExOne.

Pro Tips for Choosing the Right Material

Know Your End-Use: Is it decorative? Functional? Outdoor?
Check the Heat Resistance: Will it be exposed to heat?
Consider the Finish: Do you need to paint it?
Safety First: Use proper ventilation for ABS and Resin.
Experiment: Try small prints before committing to a large project.

Conclusion

So, we’ve taken you on a journey from the humble corn-starch origins of PLA to the high-strength titanium alloys used in jet engines. The answer to our burning question, “Is 3D printed stuff plastic?”, is finally clear: It depends entirely on the machine and the material you choose.

For the vast majority of us tinkering in garages and home offices, yes, your creations are likely made of thermoplastics like PLA, PETG, or ABS. These materials offer an incredible balance of accessibility, versatility, and cost-effectiveness. However, the technology has evolved far beyond simple plastic toys. We now have the ability to print metals, ceramics, concrete, and even biological tissues. The “plastic” label is no longer a limitation; it’s just one option in a vast toolkit.

The Verdict: What Should You Print?

If you are just starting out or looking for the best all-rounder:

Go with PLA or PETG. They are easy to use, safe, and perfect for 90% of hobbyist projects.
Need strength? Upgrade to Nylon or Carbon-Fiber composites.
Need detail? Dive into SLA Resin printing (with proper safety gear).
Need metal? Look into Metal-filled filaments for a taste, or outsource to a service bureau for true DMLS parts.

Don’t let the fear of melting or disintegration hold you back. As we discussed, understanding the glass transition temperature and UV resistance of your chosen material is the key to longevity. A well-designed part in the right material will last for decades, not days.

Final Recommendation: Start with PLA for your first few projects to master the art of layer adhesion and orientation. Once you’re comfortable, experiment with PETG for functional parts and Resin for detail. And remember, the strongest material in the world is useless if printed in the wrong orientation!

Frequently Asked Questions

Are there any eco-friendly alternatives to traditional 3D printing plastics?

Yes, absolutely. The most common alternative is PLA (Polylactic Acid), which is derived from renewable resources like corn starch or sugarcane. While it requires industrial composting facilities to break down effectively, it is a significant step away from petroleum-based plastics. Newer options include PHA (Polyhydroxyalkanoates), which can degrade in marine environments, and recycled filaments made from post-consumer waste.

What are the benefits of using plastic for 3D printing?

Plastics, specifically thermoplastics, offer a unique combination of low cost, ease of use, and versatility. They can be melted and reformed multiple times (in the case of thermoplastics), allowing for recycling. They are also lightweight, corrosion-resistant, and can be engineered with additives (like carbon fiber or glass) to achieve specific mechanical properties.

How durable is 3D printed plastic compared to traditional plastic?

This is a nuanced topic. 3D printed plastic is often anisotropic, meaning it is strong in the X and Y axes but weaker in the Z axis (between layers) due to layer adhesion issues. Traditional injection-molded plastic is isotropic (uniform strength in all directions). However, with proper design (orienting stress parallel to layers) and advanced materials (like Nylon or Carbon Fiber), 3D printed parts can rival or even exceed the strength of traditional plastics for specific applications.

Can you 3D print with metal or wood?

Yes.

Metal: You can print with metal powders using DMLS/SLM technology or use metal-filled filaments (bound metal deposition) in FDM printers, which are then sintered in a furnace to remove the binder and fuse the metal.
Wood: You can use wood-filled filaments (PLA mixed with wood dust) in standard FDM printers. These have a wood-like texture and can be sanded and stained, though they are not solid wood.

What are the different types of plastic used in 3D printing?

The main types include:

PLA: Easy, biodegradable, low heat resistance.
ABS: Strong, heat resistant, prone to warping.
PETG: Durable, chemical resistant, easy to print.
Nylon: Flexible, tough, absorbs moisture.
TPU: Flexible, rubber-like.
PC (Polycarbonate): Extremely strong and heat resistant.
Resin (Photopolymers): Used in SLA/DLP for high detail.

Are all 3D printed objects made of plastic?

No. While plastic is the most common material for hobbyists, 3D printing encompasses a wide range of materials including metals (titanium, steel, aluminum), ceramics, concrete, glass, sand, food (chocolate, sugar), and even biological tissues (bio-printing).

What materials can be used for 3D printing?

Almost any material that can be melted, extruded, or cured can be 3D printed. This includes:

Polymers: PLA, ABS, PETG, Nylon, TPU, Resin.
Metals: Titanium, Stainless Steel, Inconel, Aluminum, Gold, Silver.
Ceramics: Alumina, Zirconia.
Composites: Carbon fiber, fiberglass, Kevlar infused.
Others: Concrete, wax, sand, food, paper, and bio-materials.

Are 3D printed guns plastic or metal?

3D printed guns can be made of both. Early “Liberator” style guns were made entirely of plastic (PLA/ABS), but these were often unreliable and illegal in many jurisdictions due to their lack of metal components (making them undetectable by metal detectors). Modern 3D printed firearms often use metal printing (DMLS) for critical components like the barrel and bolt, or use metal-filled filaments that are sintered to create a functional metal part.

Does 3D printing harm the environment?

Like any manufacturing process, 3D printing has an environmental footprint. FDM printing with PLA is relatively low-impact, but ABS and Resin printing involve toxic fumes and chemical waste. However, 3D printing is often more sustainable than traditional manufacturing because it is additive (adding material only where needed), reducing waste significantly compared to subtractive methods (cuting away material). The key is to use recycled filaments and proper waste management for resins.

Are 3D printed things plastic?

Mostly, yes. For the average consumer, the answer is yes. The vast majority of desktop 3D printers use thermoplastics (PLA, PETG, ABS) or photopolymer resins. However, the technology is rapidly expanding to include non-plastic materials like metal and ceramic.

Are 3D printed homes plastic?

No. 3D printed homes are typically constructed using concrete or geopolymer mixes. These materials are extruded layer by layer to form the walls of the house. While the printing process is similar to FDM, the material is a cement-based slurry, not plastic.

Is 3D printing bad for the environment?

It depends on the material and the process. PLA is biodegradable (under specific conditions) and made from renewable resources. ABS and Resin involve petroleum and toxic chemicals. However, the additive nature of 3D printing generally results in less material waste than traditional manufacturing. The environmental impact is minimized by choosing sustainable materials and recycling failed prints.

Is 3D printed material plastic?

Often, but not always. The most common materials are plastics (thermoplastics and resins). However, the field includes metals, ceramics, concrete, and biomaterials. The term “3D printed material” is a broad category that encompasses many different states of matter.

What is material for 3D printing?

The material for 3D printing is called feedstock. Depending on the technology, this can be filament (FDM), resin (SLA/DLP), powder (SLS/DMLS), slurry (Ceramic/Concrete), or wire (Metal).

What is 3D print plastic called?

The plastic used in 3D printing is generally referred to as thermoplastic (for FDM) or photopolymer (for SLA/DLP). Specific types include PLA, ABS, PETG, Nylon, and TPU.

Is 3D printing environmentally friendly?

It can be. 3D printing reduces waste by using only the necessary amount of material. It also allows for local manufacturing, reducing shipping emissions. However, the energy consumption of printers and the disposal of failed prints and support structures can be negative factors. Using biodegradable filaments and recycling programs makes it more eco-friendly.

Is 3D printing plastic or metal?

Both. The technology is material-agnostic. FDM and SLA primarily use plastics, while DMLS, SLM, and Binder Jeting use metals. The choice depends on the application, budget, and required properties.

Reference Links

Stratasys: Stratasys Materials Guide
Formlabs: Formlabs Resin Materials
EOS: EOS Metal Materials
National Institute of Standards and Technology (NIST): Additive Manufacturing Standards
Quora Discussion: Are all my 3D printed items going to disintegrate/melt over time?
Thingiverse: 3D Printing Models
Cults3D: 3D Print Models
Prusa Research: Material Properties & Guides
Anycubic: Resin & Filament Guides
Markforged: Continuous Fiber Materials