How can I start the flow calibration for only one spool when changing the filament? I changed one spool and could only start the flow calibration for all toolheads. Maybe I’m missing something.

You can’t! Current firmware does not support that. This will be feature request. Best workaround will be manually calibrate your filaments and not use auto calibration.

Yep. What @ni42 said. To be clear, “Dynamic flow” refers to pressure advance. Marketing speak adopted from other brands, I think.

The manual flow calibration is the one suggested by and included in OrcaSliver, no ?

The product team has noted this requirement !

It has been noted it a while ago :slight_smile: just didn’t have resources to implement it yet.

Thank you, I love the feature but having to go through all 4 nozzles is just too time consuming when only a single spool (or 2) are changed out.

Thanks for the reply but I’m not seeing an advanced option. Attaching a photo of my print window [image]

Wonder if he’s talking about the ? next to the tick button

That just shows a “help” dialogue [image]

Flow Calibration for one new spool

U1 Toolchanger

Wyphorn May 12, 2026, 6:36pm 8

You can now run the calibration for just one nozzle.

On print start, activate flow calibration and click “advanced” on the right side to select just the required nozzle.

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Flow Calibration for one new spool

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