PrintSlice cuts oversized STL files into pieces your printer can actually hold, then engineers the connectors that pull them back together after printing.
TRY IT FREE, NO CARD · FIRST MODEL FREE TO DOWNLOAD · CANCEL ANYTIME
01Load
Drop in a binary or ASCII STL. PrintSlice reads its size and triangle count, and tells you whether it already fits your bed.
02Printer
Enter your bed’s X, Y and Z in millimetres. A 2 mm safety margin is kept on every side, and you can change it.
03Split
PrintSlice cuts the model into the fewest even pieces that fit. Then click where each connector should go.
04Connectors
The key is a straight tab, the pin is a round peg, and the dovetail is a wedge that won’t pull apart.
Mix them across one model.
05Download
Each piece downloads as its own STL, or all of them in one ZIP, ready for your slicer.
Connectors
A
The tab and its socket are cut from one shared shape, with 0.2 mm of clearance built in.
Loosen or tighten it per connector, from 0.05 to 0.6 mm, to suit your printer.
B
The pieces are added back up against the original volume, and each one is tested for holes.
A connector that would poke through the far side is refused before it’s placed.
C
Above 50,000 triangles, PrintSlice offers a simplified copy to work on.
You see it before you use it, and the file on your disk is never changed.
D
No. Splitting, connector generation, and the 3D preview all run in your browser — nothing to install, and your model never leaves your computer.
Build volumes for the printers people bring most often. PrintSlice keeps 5.6 mm clear on every side, so a 220 mm bed takes pieces up to 208.8 mm.
For trying it on your own model.
Split, add connectors and preview as many models as you like, with no account. Your first model is free to download. Want more before you subscribe? Start a free 7-day trial.
For everything you print after that.
£3.99
a month
What file types are supported? STL files, both binary and ASCII, for input — and binary STL for the split output pieces, the standard format every slicer accepts.
Does PrintSlice work with any 3D printer? Yes — the exported pieces are standard STL files, compatible with any slicer or printer you already use.
Do I need to install anything? No. Splitting, connector generation, and the 3D preview all run in your browser — nothing to install, and your model never leaves your computer.
How does pricing work? One plan at £3.99/month, cancel anytime — no tiers or feature gating. See the full FAQ for billing details.
Will the pieces fit together? Yes. Each tab and its socket come from one shared shape, cut with real solid geometry and 0.2 mm of clearance, so they fit without sanding.
Which connectors are there? A rectangular key, a round pin and socket, and a locking dovetail that resists pulling apart. You can mix them on one model.
Can I change a connector? Yes. Click a placed connector to change its type, size, depth and clearance, or set the defaults before you place the next one.
Why was a connector refused? PrintSlice checks it can be printed first. It refuses one that’s too big for the part, deep enough to poke through, or on a wall too thin to hold it. Try a flatter spot nearby, or a smaller connector.
Why is placing a connector slow? Usually the model is very detailed. Above 50,000 triangles PrintSlice offers to simplify it, and you can preview the result before you use it.
Anything special when printing? No special settings. Printing the faces with connectors flat on the bed gives the cleanest fit.
Is there a free trial? Yes. Split and preview with no account, and download your first model free with a free account. Pro then starts with 7 days free, and £3.99 a month after that.
How do I cancel? Log in and press Manage billing in the app. Stripe’s billing page opens, where you can cancel or change your card.