3D printing · Free
4B Engraver
Engrave your logo, name or serial number on any 3D print.
Upload a single-object STL or 3MF (up to 80 MB), pick a flat face, drop in a logo or type a name and serial prefix, and 4B Engraver cuts it into the model with a live 3D preview — then hands back a print-ready, watertight 3MF that opens in any slicer. No CAD knowledge required.
What it does
- Upload your own single-object STL/3MF (up to 80 MB) or start from built-in models (cable winders, MagSafe spooler)
- Engrave onto a flat face: PNG, JPG or WebP logos and names up to 15 letters
- Serial numbers with a custom prefix for numbered batches
- Live 3D preview with rotate and zoom
- Engraving depth adjustable from 0.6 to 2.0 mm
- Outputs a watertight 3MF compatible with major slicers
How it works
- 01
Upload a model
Choose your STL or 3MF, or pick one of the built-in models.
- 02
Add the engraving
Choose the flat face to engrave, then upload a logo, type a name, or set a serial prefix and starting number. Check depth in the 3D preview.
- 03
Download and print
Get a watertight 3MF and send it to your slicer as usual.
Questions
Is 4B Engraver free?
Yes, completely. There is no account and no watermark.
What file formats does it accept?
Single-object STL and 3MF models up to 80 MB; PNG, JPG and WebP images for logos. It always outputs 3MF.
Will the engraved model be printable?
Yes — the output is a watertight mesh, checked before download, so it slices cleanly.