iLoveSTL
free · no sign-up PT
STL splitter · free

Part does not fit the plate? Split it.

A one-metre model on a 25 cm printer becomes four parts in seconds — with a colour preview of each piece, and one watertight STL per part in the ZIP.

Split an STL engine online

Drop the STL here

or click to choose · up to 250 MB

the preview runs in your browser; the file only uploads when you download

How it works

Three steps, no sign-up.

  1. 01

    Drop the STL

    The mesh is read in your browser — the file only goes to the server when you ask for the cut.

  2. 02

    Enter the build plate

    Pick your printer or type the dimensions. The part is divided into the smallest number of equal pieces that fit.

  3. 03

    Check the colours and download

    Each part gets a colour in the preview. The ZIP has one STL per part, with the cut faces capped.

FAQ

What people usually ask.

Do the parts come with joints?
Not yet: the cut is flat, for gluing. Pin and socket joints are planned — for now cyanoacrylate on the flat face holds well, and the parts come out with the right dimensions to quote a print.
Is any volume lost in the cut?
No. The parts add up to the original volume: the cut caps the new face instead of leaving a hole, and there is no saw kerf to remove as on a real machine.
Why STL only?
Because it is the format the slicer wants, and the only one where the cut happens directly on the mesh. If your file is OBJ, STEP, 3MF or DWG, run it through the converter first — same house.
What is the limit?
250 MB per file and 64 parts per cut. A one-metre part on a 25 cm plate is four pieces along one axis — the limit only shows up when the part is large in all three.
Tools

The rest of what is here.

Conversion live

STL converter

OBJ, FBX, 3MF, PLY, DAE, GLB, STEP, IGES, DWG and DXF become STL, with a 3D preview before you download.

FreeOpen →
Parts live

Parts to measure

Enter the dimensions and download the finished part in STL and STEP — box, bracket, adapter, spacer.

FreeOpen →
Conversion live

Mould generator

Upload the object and download a two-part mould for candles, soap, plaster and resin — with the material volume worked out.

FreeOpen →
Mesh live

Repair mesh

Closes holes and fixes flipped normals that make the slicer reject the file — with a before-and-after report.

FreeOpen →
Mesh live

Resize STL

Scale by final dimension, percentage or unit change (inch to mm), without the file leaving your computer.

FreeOpen →
Mesh live

Split 3MF by colour

A 3MF painted in Bambu Studio or OrcaSlicer becomes one solid part per colour — print each in its colour and fit them together.

FreeOpen →
Personalised live

Lithophane

A photo becomes a relief to print and hold against the light: flat or curved, with a frame. The photo never leaves your computer.

FreeOpen →
Printing planned

Weight and time

Estimate filament and print hours before sending the part to the queue.

Coming soon

Split. Now it is several parts to print.

A big part is where a home printer queue hurts most. NEO 3D Print prints the parts and ships them — the price comes straight from the file.

The tools

R$ 0 forever, no sign-up

  • 10 formats become STL, with a 3D preview before you download.
  • Parts to measure as STL and STEP, from your own dimensions.
  • No sign-up, no watermark — the file is discarded afterwards.

The printed part · NEO 3D Print

10% off your first print · coupon NEO10

  • Instant price, calculated on their site from your file — no sign-up, no waiting for a quote.
  • Reprint guarantee if the part comes out off spec.
  • Pix and bank slip with 5% off, or card in instalments.
  • Has printed for LIPPEL, Tecnogera, GMG and ProStreet Studio, among others.
See my part's price See the service

Disclosure: we have a commercial partnership with NEO 3D Print and are paid for referrals. That is what pays the server and keeps the tools free, with no sign-up and no third-party ads. We recommend them because they are who we use — and the text above describes their service, not an independent review.