Free Multicolor No account needed

Spoolstamp

Free browser studio for two-color filament labels for dry boxes and spools, using a catalog of 314 Bambu colors

Spoolstamp is a free browser tool for labeling dry boxes and spools of Bambu filament. Free, open source, no account. Exports 3MF. Last checked 8 October 2026.

Open Spoolstamp See alternatives

Opens spoolstamp.bourhan.org

At a glance

Price: Free, open source, no account
Runs on: Browser
Exports: 3MF
Multicolor: Yes
Account: Not needed
Open source: Yes
Skill level: Beginner: fill in a form
Best for: Labeling dry boxes and spools of Bambu filament
Selling prints: Not allowed Selling prints is not allowed: the maker confirmed in October 2026 that the label shapes come from other designers' models whose licenses do not allow it.
How we checked: Opened the generator Studio opened without an account: hinged and clip-on designs, filament type and color pickers (314 Bambu colors), 14 Bambu printers, text filament choice and Download 3MF seen; data and model notices read in the repo; new on GitHub (Sept 2026); no-selling confirmed by the maker by email (Oct 2026); browser-based Bambu Cloud AMS connection (preview, approved accounts only) read in the README after the maker's update (Oct 2026)
Last checked: 8 October 2026

Open generator

Sources: Spoolstamp, Spoolstamp on GitHub (MIT), Spoolstamp data and model notices (checked 8 October 2026)

Something out of date? Let us know

Made Spoolstamp? Get the listing badge

What is Spoolstamp?

Spoolstamp makes labels for your filament: a hinged label for a dry box (60 x 88 mm) or a flat clip-on label for a spool (51.4 x 15 mm) with two lines of text. You pick a filament type and color from a built-in catalog of 314 Bambu Lab colors, and the lettering is filled in for you with the material, color name and color code, in black or white text depending on what contrasts best.

A live 3D preview shows the label close up or on the build plate of your printer. You choose one of 14 Bambu Lab printers and the filament for the text, and the page lists the matching print details for the chosen filament, such as nozzle and bed temperature and drying time. The download is a 3MF project for Bambu Studio with separate body and text parts, so you only confirm the two spool assignments before slicing. A My AMS view reads the spools loaded in your AMS through Bambu Cloud, right in the browser: you sign in with your Bambu account email and a verification code, pick your printer and read a fresh snapshot, and the loaded spools then fill in the labels, suggest a contrasting text color and feed a batch ZIP of 3MF files. The maker tested it with an X2D, but it is still a preview: the README says sign-in is limited to approved preview accounts for now, and the manual picker works for everyone.

It is free, needs no account and the app code is MIT-licensed. It is built around Bambu Lab filament and printers, so other brands are not in the catalog. The two label shapes are adapted from existing MakerWorld designs, and Spoolstamp is an independent project, not affiliated with Bambu Lab.

What you can make

Hinged dry-box labels
Clip-on spool labels
Two-color filament labels

How to use Spoolstamp

Choose the hinged dry-box label or the clip-on label
Pick the filament type and color from the catalog
Select your printer and the text filament
Download the 3MF and open it in Bambu Studio

What you'll need to print it

Filament and parts that suit what you make with Spoolstamp.

Multicolor filament systems

Bambu Lab AMS lite (affiliate link) Amazon
Bambu Lab AMS 2 Pro (affiliate link) Amazon

Filament dryers and dry boxes

SUNLU FilaDryer S4 (affiliate link) Amazon
Polymaker PolyDryer (affiliate link) Amazon

Matte PLA

Some of these are affiliate links: we may earn a small commission, at no extra cost to you. More about that

Spoolstamp pros

Label text filled in from a catalog of 314 Bambu Lab colors
Two-color 3MF project that opens ready to slice in Bambu Studio
Free, no account for the label studio, with a live 3D preview on your printer's plate

Spoolstamp cons

Only Bambu Lab filaments and printers in the catalog
Two fixed label designs; the cloud AMS connection is a preview, open only to approved accounts for now
The label shapes come from MakerWorld designs whose license does not allow commercial use