Sequential printing | Prusa Knowledge Base

This option is unavailable when PrusaSlicer is in Simple mode.

When printing multiple objects at once, you can finish them sequentially, one at a time. This differs from standard printing, where all objects are built layer by layer simultaneously. The main advantages are:

Reduced Stringing/Oozing: Less travel between parts as each is finished individually.
Improved Layer Adhesion: Each object completes without interruption.
Mitigates Print Failures: Failure of one part is less likely to ruin others.
Multi-Object Vase Mode: Enables printing multiple items in vase mode sequentially.

This feature uses advanced collision avoidance automatically arranges and orders objects on the build plate in a way that the print head assembly (extruder, rods, cables) does not collide agaist already compelted objects.

Note that this is only available for supported Prusa Printers. When slicing for other printers, PrusaSlicer will fall back on generic clearance settings (Extruder clearance radius and Extruder clearance height) to define the simplified shape used for collision checks. The settings for Extruder clearance radius and Extruder clearance height are located in Printer Settings -> Sequential printing limits.

Using the feature

You can turn this feature on by enabling Print settings -> Output options -> Complete individual objects.

After that, in the Plater view, click to arrange icons or press the A key. This will automatically arrange the objects in a safe way for sequential printing.

If the items are moved and a potential collision is detected, an error message will appear identifying the affected object. The error does not block export of the G-code, but requires careful review.

You'll have to check on the printer regularly, with every object there is a chance that the specific part won't stick to the print bed.

Print sequence

Check the print sequence. The print order is shown top-to-bottom on the Object list. You can manually reorder by dragging items here. Press E in the 3D view to visualize the printing sequence numerically on the objects.

G-code preview

Starting from the PrusaSlicer version 2.9.1, and exclusively for Prusa Printers, you are also able to see in the preview a 3d model of the extruder by using the horizontal slider. The standard mode will only show the preview of the top layer. By clicking on the gear on the bottom right of the plater and unchecking "Sequential slider applied only to top layer", you can see the preview of the entire print project.

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33 comments

BTHRE3D

•

Hello, Im trying to do sequential printing, but with the multi-material unit. I have a model with a lighting bolt stl located in the center of the surface of another stl. i want the green color that represents the lighting bolt to print first before printing the rest of the body in black, is there any way to do this?

Dimitris

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Hello everyone!
PrusaSlicer 2.9.2
Every G-code file contains this text at the top:
; external perimeters extrusion width = 0.40mm
; perimeters extrusion width = 0.40mm
; infill extrusion width = 0.40mm
; solid infill extrusion width = 0.40mm
; top infill extrusion width = 0.40mm
; support material extrusion width = 0.35mm
; first layer extrusion width = 0.40mm
However, if multiple platess are required and each plate is saved as a separate G-code file, this G-code file will contain the above text multiple times, one below the other, i.e., plate-1-gcode once, plate-4-gcode four times, etc.
Is this intentional?

Nobody123456098

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It would be nice if the auto arrange function would consider to fill the bed from the front to the back in the right print sequence

Frank_The_Rock

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XL and MK3.5 user here: The Auto arrange front to back Would Be a great improvement . My last print fail on a tool change hitting a middle part with the gantry It was auto arrange an I miss it ... The extruder was clearing the part but not the XL gantry. Or the bed could lower to let pass everything ?

Pietro Tordini

•

May i propose to give the option with the new arrangement system, to choose the preferred priority for printers where the order can be different

Polikonomist

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You guys don't have an upvote function on these comments so consider this my +1 for fixing the sequential printing algorithm.

If you really want to go above and beyond, add the ability to set automatic color changes between object prints in sequential printing. Among other things, this would make multipass first-layer color changes much easier. The current workaround requires manually editing the color changes into the G-code.

Multipass, first layer color changes allow for text and logos that are so much nicer than simple embossing without needing any kind of MMU.

Bionicbone

•

This is annoying, why no "Pause between Objects" option, so we can change the colour. OK I can mess witht he gcode, but really ?

Petr Kubiš

•

You can add custom G-code to run between objects. For example, to add a filament change command (M600), go to:
Printer Settings > Custom G-codes > Between objects G-code

Be aware that this will insert the M600 command before each object starts printing. There is a risk that the print head could crash into an already printed part when it moves to the filament change position.

This is also most probably the reason why adding a color change in the usual way is not implemented