A free tool from Loftsmith · No upload · No account

Too big for your printer? Split it.

Drop an STL. Loftsmith cuts it into pieces that fit your bed, joins them the way you like, and lays them out ready to print. It all runs on your own device.

Loftsmith does all of this in this browser tab. Nothing is sent to us or anyone else.

Questions

Is my file uploaded?

No. Everything runs in your browser, on your own device. The file never leaves it, and you don't need an account.

How do the pieces join?

Your choice: pegs, loose pins, a dovetail, a snap fit that stays shut or one you can undo, magnets, bolts, heat-set inserts, a glue channel, or a hidden strip for thin walls. Loftsmith picks for you unless you'd rather choose, and tells you what to buy.

Will the joints fit first time?

We haven't test-printed them yet, so please don't take that on trust. Print the small test piece first. If it's too stiff or it rattles, move the fit slider and try again before the long print.

Can I choose where it's cut?

Yes. The cuts are placed for you so every piece fits, and each only crosses the part that needs it. You can drag any cut, turn it, remove it, or add your own. A cut stops where a piece would no longer fit.

What do I get?

A print file with the pieces laid out on plates, each turned to its best side, and the steps for putting it together. On a Bambu printer it's one project that opens in Bambu Studio. You can also take each piece as its own STL.

Who makes this?

Loftsmith, where you describe a part in a sentence and get a design made for your printer. This tool is free, with no account and no limit, whether or not you ever use the rest.

Printing it is one thing; getting exactly the part you want is another. Describe a part to Loftsmith