3D Printing

A decent home 3D printer starts at around R$ 2,000, and most beginners end up spending between R$ 3,500 and R$ 6,000. A professional resin machine runs past R$ 12,000, and industrial sintering equipment starts in the range of 50,000 dollars. That's a huge price range, and it exists because "3D printer" actually refers to at least three different technologies.

How it works, in one sentence per step

1. Someone models it. A 3D file is created in a modeling or CAD program, or obtained through scanning.
2. A program slices it. The model is cut into hundreds or thousands of horizontal layers, and each layer becomes a path the machine will follow.
3. The machine builds it. Layer by layer, from bottom to top, until the part exists. It can take minutes or days, depending on size and detail.

The difference between the technologies lies in the third step: how the material becomes a solid layer.

The three technologies, and what each one is for

• FDM, melted filament. This is the typical home printer: a heated nozzle deposits plastic. Cheap, simple, and sturdy enough for functional parts, supports, jigs, and shape prototypes. It falls short on fine detail and leaves visible layer lines.
• Resin, cured by light. Far superior detail, which makes it the choice for miniatures, jewelry, dental parts, and appearance prototypes. On the other hand, resin is toxic before curing, requires washing and post-curing, and the finished part tends to be more fragile.
• Powder sintering, industrial. A laser fuses polymer or metal powder. It produces true final parts, with geometries no mold could produce. This is the price range where you're buying a service rather than a machine.

Buy or outsource

The deciding factor isn't the machine's price, it's volume. A printer only pays for itself with steady use, and the real cost includes what doesn't show up in the ad: material, failed prints, the operator's time, nozzle or tank maintenance, and, in the case of resin, a properly ventilated space.

For occasional parts, validation prototypes, or one-off items, having it printed elsewhere works out cheaper and skips the learning curve. Buying makes sense once printing becomes part of the routine — a prototype a week, production jigs, or replacement parts for a machine that's down.

The bottleneck is almost never the printer

In practice, anyone trying to print runs into trouble earlier: they don't have the 3D model, or they have a file that isn't print-ready. A model made to look good in an image isn't the same as a watertight model with real wall thickness and no holes in the mesh, which is what the printer requires.

That's the part we handle: 3D modeling and animation, including preparing the file for the right purpose. If your problem today is just opening and checking a model someone sent you, the 3D Viewer for Windows is free, and the 3D file converter handles format conversion right in your browser.