First Layer Only Order Outer/Inner, Rest Inner/Outer #2184

New Issue

MrUnknownDE · 2026-04-06T01:16:52+02:00

MrUnknownDE commented

2026-04-06 01:16:52 +02:00

Originally created by @lanpartyceo on 9/15/2025

Is there an existing issue for this feature request?

I have searched the existing issues

No similar feature request yet exits.

Request/Reason:
This request is for the ability to allow changing the first layer print order only to be different from the rest of the print.
The Purpose of this need is to allow new brimming features like mouse ears to function properly in all bed scenarios. While PEI beds are fine, PEO/PET/PEY print beds do not have the same level of adhesion when printing at the same exact line widths due to their comparatively flat surface.

Issue:
Currently, If you print a print that makes use of mouse ears because of poor corner adhesion, but then print with an Inner/Outer print odder, you must HOPE AND PRAY that the corners continue to stick to the bed by the time they reach the outer wall to connect them to the necessary mouse ears.

Current Workaround:
To get around this, you change the print order to outer/inner so that after the mouse ears print the outer wall is printed and connected to them, ensuring that all subsequent corners that are printed will also be connected and not lift.

But now you have sacrificed dimensional accuracy in order to be able to even print at all.

Which printers will be beneficial to this feature?

All

Describe the solution you'd like

Proposed Solution:

In the Quality section, under Walls and Surfaces, add First Layer Walls Printing Order selection drop down in addition to the Walls Printing Order that exists already. It can contain the same 3 options as Walls Printing Order, with an additional selection of DEFAULT, which means it uses the same selection as Walls printing order.

Caveats/Drawbacks of the proposed solution:

it has been made clear in other requests/issues submissions that changing the wall orders mid print causes dimensional issues (See here: https://github.com/SoftFever/OrcaSlicer/issues/7881).

However, as this is directed ONLY at the first layer, and in the first layer we already combat expansions such as Elephant's foot and other deformities that affect appropriate final part dimensions, this change should not in any way significantly affect final part dimensions or necessitate and additional calibrations than the ones already undertaken for the first layer.

Describe alternatives you've considered

Use a full brim, but that leads to more removal from the part and reduced surface quality depending on how much the used material shows the removal after cleanup.
Use the Height Range Modifier to change the wall order for the first layer only. This is also problematic as you can then no longer use that to make modifications to any other ranges.

Additional context

No response

*Originally created by @lanpartyceo on 9/15/2025* ### Is there an existing issue for this feature request? - [x] I have searched the existing issues ### Is your feature request related to a problem? No similar feature request yet exits. Request/Reason: This request is for the ability to allow changing the first layer print order only to be different from the rest of the print. The Purpose of this need is to allow new brimming features like mouse ears to function properly in all bed scenarios. While PEI beds are fine, PEO/PET/PEY print beds do not have the same level of adhesion when printing at the same exact line widths due to their comparatively flat surface. Issue: Currently, If you print a print that makes use of mouse ears because of poor corner adhesion, but then print with an Inner/Outer print odder, you must HOPE AND PRAY that the corners continue to stick to the bed by the time they reach the outer wall to connect them to the necessary mouse ears. Current Workaround: To get around this, you change the print order to outer/inner so that after the mouse ears print the outer wall is printed and connected to them, ensuring that all subsequent corners that are printed will also be connected and not lift. But now you have sacrificed dimensional accuracy in order to be able to even print at all. ### Which printers will be beneficial to this feature? All ### Describe the solution you'd like Proposed Solution: In the **Quality** section, under **Walls and Surfaces**, add **First Layer Walls Printing Order** selection drop down in addition to the **Walls Printing Order** that exists already. It can contain the same 3 options as Walls Printing Order, with an additional selection of DEFAULT, which means it uses the same selection as Walls printing order. Caveats/Drawbacks of the proposed solution: it has been made clear in other requests/issues submissions that changing the wall orders mid print causes dimensional issues (See here: https://github.com/SoftFever/OrcaSlicer/issues/7881). However, as this is directed ONLY at the first layer, and in the first layer we already combat expansions such as Elephant's foot and other deformities that affect appropriate final part dimensions, this change **should not** in any way significantly affect final part dimensions or necessitate and additional calibrations than the ones already undertaken for the first layer. ### Describe alternatives you've considered 1. Use a full brim, but that leads to more removal from the part and reduced surface quality depending on how much the used material shows the removal after cleanup. 2. Use the Height Range Modifier to change the wall order for the first layer only. This is also problematic as you can then no longer use that to make modifications to any other ranges. ### Additional context _No response_

MrUnknownDE closed this issue

2026-04-06 01:16:53 +02:00

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Reference: github/OrcaSlicer#2184