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More than one way to print

Your Ender 3 uses FDM, but it is just one member of a bigger family. Knowing the others helps you understand what 3D printing can do and choose the right tool for a job.
Comparison of FDM, SLA, and SLS 3D printing

The three most common 3D printing technologies

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The three main technologies

Melts thermoplastic filament and extrudes it through a nozzle, layer by layer. It has the lowest cost of entry and is the most common desktop method - this is your Ender 3. Trade-off: lower resolution than resin.
Uses a UV laser or light to cure liquid resin, solidifying it layer by layer. Produces the finest detail and smoothest surfaces - ideal for miniatures, jewelry, and dental models. Trade-off: messy resin and post-curing.
Uses a high-powered laser to fuse powdered nylon or metal. The surrounding powder supports the part, so no support structures are needed. Produces strong, functional parts. Trade-off: industrial and expensive.

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Additive vs subtractive

All 3D printing is additive - you add material to build a shape. Traditional manufacturing is often subtractive - you cut material away from a solid block.
Additive vs subtractive manufacturing comparison

Additive builds up; subtractive carves away

Additive manufacturing wastes far less material and can create complex hollow shapes that would be impossible to carve.

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Common printing materials

Plastics

PLA, ABS, PETG, and more. Affordable, versatile, and used in most desktop printing.

Metals

Powdered steel, titanium, or aluminum, fused for strong industrial parts.

Ceramics & more

Ceramic powders, resins, and even edible or concrete materials for special uses.

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Kinds of 3D printers

Compact, affordable printers for homes, schools, and hobbyists. Usually FDM. Your Ender 3 is a desktop printer.
A desktop FDM 3D printer

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Where 3D printing is used

From classrooms to operating rooms, 3D printing shows up across nearly every industry.
Diagram of industries using 3D printing: healthcare, aerospace, automotive, education, and more

3D printing is transforming industries from healthcare to aerospace to education

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Where the technology is going

Multi-material & multi-color

Printing several colors or materials in one object for vivid, functional parts.

High-speed printing

Faster machines that print in a fraction of the time without losing quality.

Bioprinting

Printing tissue, implants, and one day whole organs for medicine.

Construction

Printing houses and bridges from concrete, faster and cheaper than traditional building.
The core skill is the same across every one of these machines: turn a digital design into a physical object, one layer at a time. Learn it on your Ender 3 and you understand all of them.