Whether you’ve just discovered 3D printing or you’re thinking about buying your first printer, this guide will walk you through everything you need to know — from how the technology works to what you can actually make with it.
What Is 3D Printing?
3D printing, also known as additive manufacturing, is the process of creating a three-dimensional physical object from a digital file. Unlike traditional manufacturing — which cuts, drills, or carves material away — 3D printing builds objects layer by layer, adding material only where it’s needed.
The result? You can turn almost any digital design into a real, tangible object sitting right in your hands — from a simple phone stand to a fully articulated dinosaur toy.
💡 Fun fact: The term “additive manufacturing” comes from the idea that material is added layer by layer, rather than subtracted like in traditional machining.
How Does a 3D Printer Actually Work?
The process of 3D printing can be broken down into 3 simple stages:
Stage 1 — Design (The Digital File)
Everything starts with a 3D model — a digital blueprint of the object you want to print. You can:
- Design your own using software like Fusion 360, Tinkercad, or Blender
- Download free models from platforms like Printables, MakerWorld, Thingiverse, or Cults3D
- Purchase premium models from designers on platforms like MakerWorld or Cults3D
The most common file format for 3D printing is .STL or .3MF.
Stage 2 — Slicing (Preparing the File)
Before printing, your 3D model needs to be converted into instructions the printer can understand. This is done with slicing software — programs like:
- Bambu Studio (for BambuLab printers)
- Creality Print (for Creality printers)
- PrusaSlicer (universal, open-source)
- Cura (universal, free)
The slicer cuts your model into hundreds or thousands of thin horizontal layers and generates a G-code file — a set of precise instructions that tells the printer exactly where to move, how fast to print, and how much material to use.
Key settings you’ll configure in the slicer include:
| Setting | What It Does |
|---|---|
| Layer Height | Thinner layers = more detail, longer print time |
| Infill Density | How solid the inside of the object is (e.g. 15% = mostly hollow) |
| Print Speed | How fast the printer moves |
| Supports | Temporary structures for overhanging parts |
| Wall Thickness | How thick the outer shell of the object is |
Stage 3 — Printing (The Magic Happens)
Once the G-code is sent to your printer — via USB, SD card, or Wi-Fi — the printer gets to work. Here’s what happens during a typical FDM (Fused Deposition Modeling) print, the most common type of 3D printing:
- The nozzle heats up to melt the filament (usually between 190°C – 250°C depending on material)
- The print bed heats up to help the first layer stick properly
- The printhead moves along the X and Y axes, depositing melted filament in precise patterns
- The build plate moves down (or the gantry moves up) after each layer is complete
- Layer by layer, the object gradually takes shape — from the bottom up
- The print cools and solidifies as each layer is deposited
💡 A typical print can take anywhere from 30 minutes for a small object to 24+ hours for a large, detailed model.
Types of 3D Printing Technology
While FDM is the most popular for home use, there are several types of 3D printing technology:
| Technology | Full Name | How It Works | Best For |
|---|---|---|---|
| FDM | Fused Deposition Modeling | Melts and extrudes plastic filament layer by layer | Beginners, functional parts, large prints |
| MSLA/SLA | Resin/Stereolithography | Uses UV light to cure liquid resin | High detail, miniatures, jewelry |
| SLS | Selective Laser Sintering | Laser fuses powder together | Industrial, complex geometries |
| MJF | Multi Jet Fusion | Inkjet-style printing with powder | Professional, high-volume production |
For most beginners and hobbyists, FDM is the go-to choice due to its affordability, ease of use, and wide material availability.
What Materials Can You Print With?
The most common materials for FDM 3D printing are:
| Material | Properties | Best For |
|---|---|---|
| PLA | Easy to print, biodegradable, low warp | Beginners, decorative items, prototypes |
| PETG | Stronger than PLA, slightly flexible, water-resistant | Functional parts, outdoor use |
| TPU | Flexible and rubber-like | Phone cases, shock absorbers, toys |
| ABS | Heat-resistant, durable, harder to print | Automotive parts, enclosures |
| ASA | UV and weather resistant | Outdoor applications |
| PA (Nylon) | Tough, wear-resistant | Mechanical parts, gears |
💡 Starting out? Stick with PLA — it’s the most beginner-friendly material, prints at lower temperatures, and comes in hundreds of colors.
What Can You Actually Make With a 3D Printer?
This is where things get exciting. The answer is: almost anything. Here are just a few examples of what people print every day:
🏠 Home & Decor
- Custom lampshades and vases
- Wall art and geometric sculptures
- Planters and bird feeders
🎮 Gaming & Tech
- PS5 controller stands
- Nintendo Switch grips and accessories
- Cable management solutions
- Phone stands and MagSafe holders
🛠️ Functional & DIY
- Custom brackets and mounts
- Replacement parts for household items
- Workshop tools and jigs
🎁 Gifts & Novelties
- Personalized name plates
- Articulated toys and figurines
- Unique jewelry and keychains
🌿 Outdoor & Garden
- Bird feeders and planters
- Custom garden labels
- Waterproof tool holders
What Do You Need to Get Started?
Here’s everything you need to start your 3D printing journey:
1. A 3D Printer
For beginners, we recommend starting with one of these trusted brands:
- BambuLab A1 Mini — best all-around beginner printer with smart features
- Creality Ender 3 V3 — budget-friendly with a massive community
- BambuLab P1S — step up for enthusiasts who want speed and enclosure
2. Filament
Start with PLA filament in 1.75mm diameter. Trusted brands include:
- Bambu Lab PLA
- eSUN PLA+
- Polymaker PLA
3. Slicing Software
- Bambu Studio (if using a BambuLab printer)
- Creality Print (if using a Creality printer)
- Cura (universal, free, great for beginners)
4. 3D Models
Download free models from:
- Printables.com
- MakerWorld.com
- Thingiverse.com
- Cults3D.com
Common Beginner Mistakes to Avoid
| ❌ Mistake | ✅ What to Do Instead |
|---|---|
| Skipping bed leveling | Always level your bed before every print |
| Printing too fast | Start slow, increase speed as you gain confidence |
| Ignoring first layer quality | The first layer is everything — get it right |
| Using cheap filament | Invest in quality filament for consistent results |
| Skipping supports | Use supports for any overhang over 45° |
| Not drying filament | Moisture ruins prints — store filament in dry boxes |
No Printer? No Problem.
Not ready to invest in a printer yet? You can still experience the joy of 3D printing by purchasing ready-made 3D-printed products directly from Esty. Browse our curated collection of tested, high-quality 3D-printed items — from home décor to gaming accessories — and get them delivered straight to your door.
THE3DSHELF exists exactly for this reason: to show you what’s possible with 3D printing, whether you own a printer or not.
Final Thoughts
3D printing is one of the most exciting technologies available to everyday people right now. Whether you want to solve a practical problem, create something beautiful, or simply explore what’s possible, a 3D printer puts the power of a small factory right on your desk.
The barrier to entry has never been lower — modern printers like the BambuLab A1 Mini are nearly plug-and-play, and the community of makers sharing free models online means you can start printing in minutes.
Ready to explore? Browse our latest 3D printed ideas on THE3DSHELF and find your next favorite print. 🖨️
Found this guide helpful? Share it with a friend who’s curious about 3D printing — and don’t forget to check out our latest prints on MakerMarket!