Yes agreed,

I generally use the keyboard keys to draw the outline rather than a
mouse and use the relative co-ords.

I zero them when I start an outline, then lay down the outline, when
I get back to the start point I check that the co-ords are at 0,0, 
then I know The lines will connect correctly.

Andy



On Sat, 1 Oct 2022 07:54:24 +0100
"Robert" <birmingham_spider@...> wrote:

First check you have no duplicated segments.   The way I do that is I
select the reported segment and delete it.   If nothing appears to
happen, you have found your problem (assuming you don't have many
duplicates, in which case keep going!).   If the segment disappears off
the screen, undo your action and try another segment.

If that doesn't fix the problem, it may be incredibly small.   Clicking
the endpoint of one of the segments and dragging it over the endpoint of
the other segment (watch for the cursor change) may appear to do nothing
useful, but usually it fixes the problem.   Alternatively, take a look
in the segment properties of two segments that should connect and ensure
the relevant endpoints match exactly.

Regards,

Robert.


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On 01/10/2022 05:37, Steve via groups.io wrote:

When I run DRC I have this error:

Error: Board has malformed outline (self-intersecting)
Line on Edge.Cuts
Rect on Edge.Cuts

Clicking on the second and third lines take me to places on the board layout (in
PCB Editor) but I do not see anything wrong at those locations.

I do not understand what this error message means, so I have no idea what to
look for. An internet search has provided no useful information.

Can anyone offer an interpretation of this three-line error message? Or an idea
of where to look on the internet for information about it?

Thanks.
Steve
(new to KiCad)