The "Staggered Start" feature

Staggered Start helps print farms - or anyone with more printers than their fuse panel can comfortably handle - start their entire fleet at once without tripping a breaker or overloading their network. It works by capping how many printers can be in the heat-up phase (or downloading files) at the same time. Once a printer reaches temperature and starts printing, the next printer in the queue is released to begin heating, until all pending prints are running.

You can also read about it on our feature page, which has the trailer video and a broader overview.

Table of contents

• What is Staggered Start, and why do you need it?
• The empty state - getting started
• Creating your first stagger group
• Setting your heating limit
• Tool & bed temperature thresholds
• Optional: cap concurrent downloads
• Choosing which printers it applies to
• Multiple stagger groups for multi-room and multi-location farms
• Heating limit calculator
• Does it work with the app, queue, AutoPrint and API?
• Notes on Bambu Lab and staggered downloads

What is Staggered Start, and why do you need it?

Heating beds and hotends account for the vast majority of a 3D printer's power consumption - and the spike happens while they're heating up, not while they're printing. That's why your farm can run fine 24/7, but the moment you start all your printers at once, the breaker trips.

Staggered Start solves this by limiting how many printers can be in the heat-up phase at the same time. The rest wait their turn in a "Pending start" state. Each printer is released to start heating the instant another finishes preheating.

There's also a separate bonus limit for how many printers can download files at the same time - useful if your internet connection chokes on 20 G-code files being pulled at once.

The empty state - getting started

To get started, go to Settings > Staggered Start:

You'll see an empty state with a quick explanation of the two controls - heating and downloads - and a Set up Staggered Print Start button. There's also a Heating Limit Calculator button in the top right - more on that further down.

Click the set-up button to create your first group.

Creating your first stagger group

A stagger group is a set of rules that applies to a chosen set of printers (or all of them). You'll configure four things: the heating limit, the temperature thresholds, an optional download limit, and which printers the group covers.

Setting your heating limit

The Max heating at once slider is the most important setting. It controls how many printers from this group can be in the preheat phase simultaneously. Toggle it on, then drag the slider to your safe number:

If you're not sure what number to pick, jump to the heating limit calculator section below for a starting point.

Tool & bed temperature thresholds

By default, the platform waits for each printer to hit its full target bed and hotend temperature before releasing the next printer in the queue. That's the safest behaviour, but it can be slow - especially on big beds.

If you want the queue to move faster, you can override the threshold:

• Wait for target temperature (default) - the printer must reach the actual print temperature for that job
• Wait for tool/bed to reach at least X°C - the printer is considered "heated" once it hits your chosen threshold, even if the final print temperature is higher
• Don't wait for tool/bed - skip the temperature wait entirely for that stat

A common setup is to leave tool temperature at full target (because hotends are usually fast) and set a lower bed threshold (e.g. wait for 20°C, since beds take far longer to reach 60-100°C):

Optional: cap concurrent downloads

If your network connection is a bottleneck, enable Max downloading at once in the right-hand panel. Drag the slider to your concurrent-download limit:

Note the warning about Bambu Lab printers - see the Notes on Bambu Lab section at the bottom.

Choosing which printers it applies to

Scroll to the Printer selection field at the bottom of the form. If you leave it empty, the group applies to every printer in your account. Otherwise, click the field and pick specific printers, models or groups:

The picker groups your printers by their printer group (Team Blue, Print Paradise, West Wing in the example above), so you can apply a stagger group to "all printers in the basement" with one click.

Click Create staggered group to save. You'll land on the summary view:

That's it - the group is active. The next time anyone in your account starts a print on a covered printer, the limits kick in automatically.

Multiple stagger groups for multi-room and multi-location farms

If your printers aren't all on the same circuit - different rooms, different floors, different buildings - one global limit isn't right. You can create multiple stagger groups, each with its own limits and printer scope.

Scroll to the bottom of the Staggered Start page and click + Add another staggered group:

You can repeat this as many times as you need. Each group is staggered independently - one group's heating queue doesn't block another's:

In the example above, "Main staggered group" covers the SP-H2D, Prusa MK4S and Bambu P2S Combo (one circuit), while "Group #2" covers the Creality K2 Combo, Bambu P1P 2 and Bambu X2D Combo (another circuit). Both can run at their full configured concurrency at the same time.

Heating limit calculator

If you've never measured your circuit's headroom, we built a Heating Limit Calculator to suggest a starting number. You'll find the button in the top right of the Staggered Start settings page.

The calculator asks for:

• Your region (US/North America or EU/rest of world) - to set the typical voltage
• Your circuit breaker rating in amps
• The size of your printers (small, medium, large)

…and it gives you a recommended max heating concurrency.

Does it work with the app, queue, AutoPrint and API?

Yes - every print start is staggered. There's no "did I remember to enable it?" - once a stagger group is configured, every start on a covered printer goes through it:

• Web platform print starts
• Mobile app print starts
• Public API calls
• 1-Click Print on the queue
• AutoPrint - continuous printing

A printer waiting for a slot shows in a "Pending start" state. You can cancel a pending print at any time - the next one in line takes its place.

Notes on Bambu Lab and staggered downloads

There's one caveat with download staggering: some printers don't support deferred downloads. Bambu Lab printers in Cloud mode start downloading the moment they're sent a print, regardless of your stagger setting - because the download is initiated by Bambu's own cloud, not by SimplyPrint.

For those printers:

• The heating stagger still applies normally - they queue for the heating slot like everything else
• The download stagger doesn't apply - they download immediately, but still can't start heating before the queue allows

If your Bambu printers are running in LAN mode (where SimplyPrint controls the download directly), the download stagger works the same as on any other printer.

We hope this article helped you set up Staggered Start. If anything's still unclear, reach out via the live-chat in the bottom right corner of any SimplyPrint page.

Updated on: 21/05/2026