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Gantry

All your 3D printers in one window.

Gantry shows print progress, temperatures, filament and camera feeds for every printer you own. It runs on macOS, Windows and Linux.

Download for free Watch the film

01Overview

See every print at once.

Whether you have one printer or five, you instantly see what they're printing, how long is left and how much filament is in the AMS.

printer families
6
operating systems
3
accounts to create
0
licence, open source
MIT

02An evening in the workshop

The same evening. Two ways.

Five printers and several prints at once. On the left you check everything yourself; on the right Gantry tells you.

without Gantry
  1. You open the maker’s app to see the X1.
  2. A second browser tab: the Klipper panel for the Voron.
  3. You walk to the workshop to see if the P1S is done. Not yet.
  4. The X2D starts printing “spaghetti”. Nobody is watching.
  5. You notice. 28 minutes of printing into thin air.
  6. The cost of the print? Off to a spreadsheet.
You check yourselfseparate apps, tabs and walks to the printer
with Gantry
  1. Menu bar: X1 66% · P2S 62% · MINI 60%. One window for the whole fleet.
  2. Bambu, Klipper and Prusa in the same view.
  3. Notification: “P1S · print finished”.
  4. Gantry Vision: X2D — possible “spaghetti”. The frame comes with the notification.
  5. You pause the X2D from your phone, through Telegram.
  6. History: time, filament, power and cost of every print.
Gantry lets you knowmenu bar, notifications and Vision

Sample scenario

03Views

Choose where Gantry sits on your screen.

Peek from the menu bar, open a separate window or keep the cameras at the edge of your screen.

Menu bar

Open it for a moment, click away and get back to work.

Fleet window

A separate window you size to your screen and number of printers.

Side panel

Cameras and progress at the edge of the screen, next to your project in the slicer.

01

Menu bar

Open it for a moment, click away and get back to work. The current print's percentage stays in the menu bar the whole time.

02

Fleet window

A separate window you size to your screen and number of printers. All cards at once, with temperatures and AMS.

03

Side panel

Cameras and progress at the edge of the screen, next to your project in the slicer. Pin it and it stays expanded.

04Try it

Try Gantry in your browser.

Click a printer, look into the AMS, then click outside the panel. It's a simulation in your browser — it doesn't connect to any printer.

A MacBook screen opens with the desktop, the menu bar and a working Gantry panel.

01 Open from the bar02 Pick a printer03 Check the AMS

Or watch a 35-second film: five real views of the app.

05Features

Everything about your prints and filament in one place.

Printer details

Everything about one printer on one screen.

Print stage, recent jobs, statistics, camera and the full AMS layout — in the order you choose.

Filament

See how much filament is left in the AMS.

Material, colour, level and humidity. A spool running low gets a red dot.

AMS34°C · 32% RH
27%A1 · PLA
80%A2 · PETG
55%A3 · PLA
12%A4 · ABS

A4 · ABS: filament running low

Spoolbase

Spoolbase tracks your filament stock to the gram.

Spools, colours and materials in one inventory. Usage updates after each print.

Spoolbase7 spools · 3 variants
PLA3 filaments
Jade White · spool A1630 g
SIMULATION · ADAPTER.3MF · 42 G

See how stock changes after a print.

Maintenance

Gantry reminds you about maintenance.

Rails, axes, belts and nozzle — reminders based on print hours.

Maintenance · X1sample data
  • Clean guide rodsin 6 h
  • Lubricate axesin 120 h
  • Inspect beltsin 260 h

Statistics

Statistics show how your whole fleet is doing.

Run time, completed prints and success rate. Export to a file.

Statistics · 30 dayssample data
94%successful prints
212 hprint time
41prints
X1
P2S
P1S
MINI
X2D

Print control

Skip a failed object and the rest keeps printing.

Skip a selected object on supported Bambu Lab and Klipper printers. Turn on control in settings.

06For bigger workshops

Gantry grows with your workshop.

As your printer count grows, tools for the whole fleet come in handy. You turn most of them on separately, when you need them.

Farm

One file, several printers.

A file library by printer family, AMS material matching and “Check selection” before starting. The queue starts the next copy only after you confirm an empty bed.

Documentation

Maintenance & service

Fleet service without a notebook.

An “In service” status, tasks with checklists by print hours or days, problems with a photo and priority, and a parts inventory with minimum stock.

Documentation

Web dashboard

Your fleet in a browser, even away from home.

On your local network there’s a read-only preview. On your own PHP and HTTPS hosting, Gantry prepares a site package that also works outside your Wi-Fi.

Documentation

LITE mode

Just the status, nothing more.

When you only need progress in the menu bar or tray, LITE hides the other tools. Your printers, history and stock stay saved.

Documentation

07Colours and filaments

File colours go where the spools are.

The Farm matches the filaments in a sliced file to what is actually loaded — by material and colour. No moving spools around, no slicing the file again.

Bambu Lab · AMS

Slots matched at start

Gantry works out which AMS slot prints which colour and sends that with the start command.

G-code · multi-tool

Tools rewritten in a copy of the file

On multi-tool G-code printers Gantry changes T0, T1, T2… in a working copy of the file, so each colour lands on the right toolhead.

When a colour has nowhere to go, Gantry doesn’t guess — the pre-send check shows what’s missing.

Multi-material systems in Gantry

  • AMS / AMS HTBambu Lab
  • CFSCreality (Klipper)
  • ACE ProAnycubic Kobra S1
  • CanvasElegoo Centauri Carbon 2
  • Happy Hare MMUKlipper

Slots, colours, the active source and amounts — as much as the printer reports.

08Gantry Vision

Gantry Vision watches the print when you don't.

While you print, it watches the camera feed and flags a suspected problem, such as “spaghetti” or a detached model. The analysis runs on your computer.

X1 · watching

ok94%

spaghetti4%

detached2%

Example. Classes of the default Gantry Vision Fast model: ok, spaghetti and detached.
  • It stays on your computer. Image analysis and the photo archive run locally. The Gantry Vision Fast model ships with the app.
  • It shows what it saw. A notification can include the exact frame that triggered the alert.
  • It records the stages of a print. Photos of the first layer, 25%, 50%, 75% and the end go to an archive you can export as a ZIP.
  • You make the call. An alert is a reason to check the printer, not a verdict. Only your confirmation creates an issue with a photo in Maintenance & service.

It needs a camera and good lighting — a dark or blocked image can't be judged reliably. Turn it on in Settings → Advanced. You can also choose your own ONNX model. How to turn on Gantry Vision

09Costs

Know what every print cost.

Gantry counts filament and electricity, and with a Tasmota or Shelly plug it measures power draw while you print. See how it adds up in an example.

Example calculator

120 g of filament · 4.5 h of printing · Gantry defaults

Production costs
Mark-up and extras

Filament—

Electricity—

Machine time—

Print cost—

Failure allowance—

Labour—

Packaging—

Profit (mark-up)—

Marketplace fee—

Income tax—

VAT—

Customer price—

Formulas and defaults as in Gantry 0.14 (Settings → Pricing). An estimate for pricing, not tax advice.

Print report · TXT sample data
Gantry · Print report

File / job: adapter.3mf
Printer: X1
Result: Completed
Print duration: 4h 30m

ENERGY
0.6750 kWh · estimated from printer wattage
Electricity cost: 0.68 PLN

FILAMENT
1. PLA · 120.00 g · 80.00 PLN/kg

COSTS
Filament: 9.60 PLN
Electricity: 0.68 PLN
Machine time: 0.00 PLN
Print cost: 10.28 PLN
Estimated sale price: 14.47 PLN
Estimated profit: 3.24 PLN
  • Measured, not guessed. With a Tasmota or Shelly plug, Gantry reads power about every 5 seconds for the whole print, pauses included.
  • You know where the number comes from. Every result is labelled: measured, partly measured or estimated from average power.
  • Print pricing. In Settings → Pricing you set the mark-up, tax, VAT, marketplace fee, packaging and your own time. Gantry shows the customer price and estimated profit for every print.
  • Report and export. Download a single print as TXT and the whole history as CSV.

Energy, costs and export in the docs

10Telegram

Check your printers from your phone with Telegram.

Alerts reach your phone, and your bot replies with status, buttons and a camera snapshot.

Telegram: fleet status and a camera snapshot Telegram: X2D progress, temperatures, pause and camera preview Telegram: finished-print notifications
/status
Job, progress, temperatures and controls.
/all
Your whole fleet in one message.
/spools
Spools that will run out soon.
/watch 10m
A camera snapshot at a set interval.

Your own bot, your chat. The bridge is a computer running Gantry.

11Web dashboard

Your workshop in your phone’s browser.

Gantry shows your fleet in a browser too: on your home network, or through a bridge to your own hosting, away from Wi-Fi as well. No separate app and no Gantry server in between.

  • On your networkTurn on the preview server and open the address the app shows.
  • Away from homeGantry builds a package for your PHP hosting with HTTPS, and the bridge sends the fleet status there.
  • Like an appAdd the panel to the home screen of an iPhone or Android phone. Password sign-in, remembered for up to 30 days.
  • You decideView-only to start with. Cameras, the Farm, Spoolbase and control are shared separately.
How to set up the panel

12Compatibility

Gantry supports six printer families.

Five features across six FDM printer families, plus a status view for selected resin printers. Some features must first be turned on in the printer, e.g. LAN-only on Bambu Lab. Code as of 21 October 2026.

What works with each printer

Pick a row to see the printer’s details.

availabledepends on the model, firmware or setupnot available

Bambu Lab

MQTT · LAN mode

5/5

MQTT in LAN mode. Control once LAN-only and Developer Mode are on.

  • StatusYes
  • CameraAll models
  • FilamentAMS / AMS HT
  • ControlLAN-only + Developer Mode
  • Upload3MF, LAN mode
Everything about Bambu Lab in Gantry

Klipper

Moonraker

5/5

Moonraker, also Creality, Qidi and Snapmaker U1. G-code files.

  • StatusYes
  • CameraConfigured
  • FilamentPer config
  • ControlPAUSE / RESUME macros
  • UploadG-code
Everything about Klipper in Gantry

Elegoo

Centauri Carbon 1 and 2

4/5

Centauri Carbon 1 and 2. MJPEG camera, pause and stop.

  • StatusYes
  • CameraMJPEG
  • FilamentDepends on generation
  • ControlPause, stop
  • UploadNo
Everything about Elegoo in Gantry

Anycubic

Kobra S1

4/5

Kobra S1 with ACE Pro. FLV camera, pause, resume and stop.

  • StatusYes
  • CameraFLV stream
  • FilamentACE Pro
  • ControlPause, stop
  • UploadNo
Everything about Anycubic in Gantry

Prusa

PrusaLink

4/5

PrusaLink. Pause, stop and G-code files; camera as a separate address.

  • StatusYes
  • CameraSeparate camera
  • FilamentNo
  • ControlPause, stop
  • UploadG-code, BGCODE
Everything about Prusa in Gantry

Resin printers

SLA / MSLA · experimental

1/5

SLA / MSLA: Elegoo, Anycubic Photon, Prusa SL1, Formlabs. Status only, experimental.

  • StatusStatus and layers
  • CameraNo
  • FilamentNo
  • ControlNo
  • UploadNo
Model list on GitHub
StatusCameraFilamentControlUpload
Bambu LabMQTT · LAN modeYesAll modelsAMS / AMS HTLAN-only + Developer Mode3MF, LAN mode
KlipperMoonrakerYesConfiguredPer configPAUSE / RESUME macrosG-code
ElegooCentauri Carbon 1 and 2YesMJPEGDepends on generationPause, stopNo
AnycubicKobra S1YesFLV streamACE ProPause, stopNo
PrusaPrusaLinkYesSeparate cameraNoPause, stopG-code, BGCODE
SnapmakerLocal APIYesSeparate cameraNoNoNo
Resin printersSLA / MSLA · experimentalStatus and layersNoNoNoNo

YesConditionalNoFull model list

What do you need to connect?
Bambu Lab
IP address, serial number and access code. For control, turn on LAN-only and Developer Mode on the printer; for the camera, LAN camera view. Uploading a file does not start a print.
Klipper
Moonraker address, port and an API key if used. The camera needs a configured source; pause and resume need the matching macros.
Elegoo
Pick the exact Centauri generation. CC2 needs LAN-only mode and an access code; CC1 uses local SDCP.
Anycubic Kobra S1
Turn on LAN mode and enter the IP. The camera needs a local stream and the decoder bundled with the app.
Prusa
IP address and PrusaLink API key. Pause, stop and file upload work through PrusaLink; add a camera as a separate JPEG/MJPEG address.
Snapmaker 2.0 / Artisan
IP address and approval on the printer’s screen. The integration shows status and temperatures; add a camera as a separate JPEG/MJPEG address.
Resin printers (SLA / MSLA)
Experimental view of status, file, layers and time: Elegoo Saturn 4 Ultra, Saturn 3 Ultra, Mars 5 Ultra and Mars 4 Ultra, Anycubic Photon Mono X 6K, Photon P1 and P1 Max, Prusa SL1 and SL1S SPEED, Formlabs Form 3 and Form 4 via PreForm Server, and Phrozen via an OctoPrint bridge. No control or file upload.

13Privacy

Your data stays on your network.

Core monitoring runs directly between your computer and your printers. No Gantry account and no relay server.

It talks straight to the printer

Gantry connects to devices on your LAN. You don't need the cloud for everyday monitoring.

Your system protects access codes

Access codes live in the macOS Keychain, Windows DPAPI or Linux Secret Service.

The code is open

MIT licence. The code is there to read, build and extend.

More about security
  • The printer's certificate is remembered. For TLS connections, the printer's certificate is pinned after the first trusted connection.
  • Printers are found automatically. Bambu printers are found via SSDP and a subnet scan; for Tailscale you can add your own range.
  • Updates are verified. The package is verified by code signature on macOS and by SHA-256 checksum on Windows.

Free.
On every
desk.

The same Gantry on macOS, Windows and Linux. Your computer and printers need to be on the same local network, and you add each printer with the “+” button.

v0.14.0 · · MIT · What's new

What's new in v0.14.0

Full release notes
  • Gantry Basic and Gantry Modern.Two card templates, compact readings and consistent application headers.
  • New Maintenance & service.In-service status, custom tasks and checklists, templates, hour-based and calendar schedules, problems with photos, cost history and spare-parts inventory.
  • Dedicated AMS / Filaments view.Printer selection, colour slots, active feeder, percentage and grams, and Spoolbase roll assignments.
  1. 01Install and launch Gantry.
  2. 02Click “+” and enter the printer's address and access code.
  3. 03Choose the menu bar, fleet window or side panel.

All files and SHA-256 checksums · Installation guide

14FAQ

Frequently asked questions

What is Gantry for?

It's a monitor for your 3D printing workshop. It shows printer status, progress, temperatures, filaments and available camera feeds. You still prepare models in your slicer.

Do I need the cloud or an account?

Core monitoring needs no Gantry account and no relay server. Printers connect to the app over your local network. Telegram is optional.

Which printers can I connect?

Bambu Lab, Klipper / Moonraker, PrusaLink and selected Elegoo, Anycubic and Snapmaker models. Resin printers get an experimental status view too: Elegoo Saturn and Mars, Anycubic Photon, Prusa SL1 and Formlabs. The full model list is in the documentation on GitHub.

How do I turn on the side panel with cameras?

In the window and bar settings, turn on the edge panel, choose the display and side of the screen, then pin it. Camera availability depends on the printer.

Does Telegram work when the computer is off?

No. The bridge between your printers and Telegram is a computer running Gantry with a network connection.

Let them print.
You keep making.

Download for free

The workshop keeps printing.

INTERACTIVE DEMO

TRY IT YOURSELF

Click Gantry in the bar to open the panel.

Click a printer and look inside. Then click outside the panel — and get back to your things.

01 Open from the bar02 Pick a printer03 Check the AMS
Gantry· 5 printers · 5 printing
Print in peace — everything under control
A preview, no install needed.A simulation in your browser. Not connected to any printer.