Top Solid infill creates surface artefacts

[GuyH77]

Description of the bug

There has been a change between 2.6.1 and 2.7alpha1. The solid infill is no longer created from corner to corner, it now jumps around which creates ridges and impacts the top layer quality.

2.7

2.6.1

Project file & How to reproduce

Checklist of files included above

• Project file
• Screenshot

Version of PrusaSlicer

2.7.0-aplha1

Operating system

Windows 10

Printer model

Prusa XL

[Jan-Soustruznik]

Hello, @GuyH77,

could you share a 3MF file, please?

[GuyH77]

@Jan-Soustruznik

2.7_layer_test.3mf.zip

Sorry, I thought I'd done that. Test file attached.

Photos may also help.

Top 2.7 Bottom 2.6.1

This was the print that caused me to investigate the problem.

[BrienKing]

I've run into a similar situation after upgrading the XL to Alpha 2 and using the Slicer 2.7 Alpha 1.

Mine almost looks like a checkerboard pattern almost like it's not enough top layers.

This printed fine in 2.6 and XL 4.7.2

Here is a 3mf file of it.
PS2.7A Scared Blue Ghost.zip

[lukasmatena]

Thanks to you both. We will look into it. It is clearly a bug.

[lukasmatena]

SPE-2007

[lukasmatena]

Fixed in 2.7.0-beta1. Closing.