How 3D printing works
3D printing is additive. The printer builds an object one thin layer at a time, usually from melted plastic filament, liquid resin or fine powder. Because it adds material only where it's needed, it can make shapes that would be impossible to carve, like hollow parts or pieces that interlock straight off the printer.
The tradeoff is speed and size. Large objects take hours, sometimes days, and most home printers can't make anything much bigger than a shoebox. Material choices are also narrower than what you'd find at a lumberyard.
How 3D cutting works
3D cutting is subtractive. A CNC router or laser cutter cuts flat parts out of sheet material such as plywood, MDF or acrylic. Those parts are designed to slot together into a three-dimensional object. Think flat-pack furniture, but cut from a file on demand instead of mass-produced in a factory.
It's fast, and sheet material is cheap and strong. A machine can cut the parts for a full-size chair or shelf in well under an hour. The limit is shape. Everything starts flat, so designs rely on clever joints and slots rather than curves in every direction.
Side by side
| 3D printing | 3D cutting | |
|---|---|---|
| Method | Adds material layer by layer | Cuts parts from flat sheets |
| Best size | Small, palm to shoebox | Large, up to furniture |
| Speed | Slow for big parts | Fast |
| Shapes | Almost any geometry | Flat parts that slot together |
| Materials | Plastic, resin, some metals | Plywood, MDF, acrylic, metal sheet |
Which one should you use?
Use 3D printing for small, detailed things. Replacement parts, prototypes, jewelry and phone stands are all good fits.
Use 3D cutting for big, simple things that need to be sturdy. Furniture, shelving, signs, planters and room dividers are where it shines. Most cities have makerspaces or CNC shops that will cut a file for you, so you don't need to own the machine.
Why it mattered to the original Fabsie
The old Fabsie bet on 3D cutting because furniture made near home doesn't need to be shipped across the world. Its first product was a flat-pack rocking stool, and you can read its story in This Stool Rocks.
Fabsie is a self-care journal now, and making something with your own hands still counts. For more ideas on making your space work for you, browse our Home stories.
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