Thin lines in glyphs after export to fontformat

I have created a font in Glyphsapp, and used in InDesign.
But as shown in the image, some glyphs have a thin line in them.
When I zoom in, the lines disappear…

I guess this is because the glyphs are taken from Illustrator, but what can I do about this?

Clean up and simplify the paths in question, I’d say.
Also, disable autohinting at export.
If the problem persists, you can mail us the file and we’ll have a look.

Thanks for the quick reply and for pointing to that blog post (I had already read that) :slight_smile:

The trouble were indeed the scanned hand-made forms, and converted to paths with Illustrator…
On the intersection between the thin lines and the outlines, I found things like:
-green control points that made an angel (but should be 180°)
-blue control points that created a little intersection in the outlines.
solving these solved the thin lines.

It wasn’t the first time I had used the method of auto conversion of images to outlines, but it was the first time it didn’t work as expected…

I can solve this now, I will just check all control points
aside, it would be nice if Glyphsapp could do a check for this when pasting paths out other programs?

What you can do now already is Layer > Tidy up Paths (Cmd-Opt-Shift-T) for all glyphs. Also, Add Extremes and Correct Path Direction may help. See this blogpost for more details. This helps, but AI paths will remain a problem.

That’s why I usually suggest avoiding AI. Did you use AI solely for tracing scans? Have you tried the Trace plug-in for Glyphs?

Didn’t know that plugin, thanks!
All forms are now ready in Illustrator,
but when this font is ready, I will give this a try :slight_smile: