Tool Changer multiple nozzle sizes in same print #1566

New Issue

MrUnknownDE · 2026-04-05T18:26:08+02:00

MrUnknownDE commented

2026-04-05 18:26:08 +02:00

Originally created by @factoidforrest on 11/20/2025

Is there an existing issue for this feature request?

I have searched the existing issues

Is there an existing issue for enabling multiple nozzle sizes in a single print? With the release of the snap maker u1 tool changers are now going to be far far more common. The fact that multiple nozzle sizes can't be sliced in the same print is becoming a real problem. As someone who most frequently prints with .6mm but would like to have a .4mm on hand for detail, there is a missed opportunity to use the strengths of both. As far as I can tell this is a pure software limitation of the slicer. Please correct me if I'm wrong.

What work needs to be done to enable this kind of slicing, in its most basic form?

Which printers will be beneficial to this feature?

Klipper

Describe the solution you'd like

Here is how I see the possible UX:

Nozzle size will need to be set on a per-head basis, instead of per-printer. Perhaps in the printer configuration nozzle size section there could be a checkbox that says "multiple nozzle sizes" and when you check that you get a field for each tool head nozzle size instead of the single field. When this button is checked, the UI displays nozzle size in addition to color on relevant dialogues that show color/material/toolhead selection.

Describe alternatives you've considered

No response

Additional context

No response

*Originally created by @factoidforrest on 11/20/2025* ### Is there an existing issue for this feature request? - [x] I have searched the existing issues ### Is your feature request related to a problem? Is there an existing issue for enabling multiple nozzle sizes in a single print? With the release of the snap maker u1 tool changers are now going to be far far more common. The fact that multiple nozzle sizes can't be sliced in the same print is becoming a real problem. As someone who most frequently prints with .6mm but would like to have a .4mm on hand for detail, there is a missed opportunity to use the strengths of both. As far as I can tell this is a pure software limitation of the slicer. Please correct me if I'm wrong. What work needs to be done to enable this kind of slicing, in its most basic form? ### Which printers will be beneficial to this feature? Klipper ### Describe the solution you'd like Here is how I see the possible UX: Nozzle size will need to be set on a per-head basis, instead of per-printer. Perhaps in the printer configuration nozzle size section there could be a checkbox that says "multiple nozzle sizes" and when you check that you get a field for each tool head nozzle size instead of the single field. When this button is checked, the UI displays nozzle size in addition to color on relevant dialogues that show color/material/toolhead selection. ### Describe alternatives you've considered _No response_ ### Additional context _No response_

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Reference: github/OrcaSlicer#1566