Regression in internal edge cuts, panelize rounds edges

[idank]

Prerequisites

• [X] I have read FAQ
• [X] I have searched existing issues (including closed ones)
• [X] I use KiKit at least version 1.5.1 (older version are not supported)

KiKit version

kikit, version 1.5.1

KiCAD version

8.0.2

Operating system

Ubuntu

Description

panelize seems to go from this:

to this:

It used to work OK a couple of months ago when I opened https://github.com/yaqwsx/KiKit/issues/663.

Steps to Reproduce

https://gist.github.com/idank/e0e9a3a2352c16619a921e15b458fc7a

[yaqwsx]

You haven't provided the panelization settings. If KiKit processes the file as is, there is no change in the contour outline. I expect you to use millradius, but I don't know with what radius. Without this information, there is not much I can do.

If you use millradius: 0.5mm then the regression is already fixed in upstream.

[idank]

Ah sorry, I seem to be using:

"post": {
        "millradius": "1mm"
    }

Was there a recent change so this started to apply to internal edges too? I haven't changed my kikit settings, but there were some kicad minor upgrades since I lasted tested it on this kind of footprint.

[yaqwsx]

The dogbones in your file are formed by arcs with a radius of 0.5mm. They cannot be milled with an end mill with a radius of 1mm - the mill doesn't fit. Therefore, KiKit's current behavior is correct. If it used to behave differently, it was a bug.

[idank]

Makes sense, thanks!