Errors in the paths in exported fonts

Glyphs
1

Hello everyone!

I have two masters - Light and Bold. All the paths are correct, without any errors. I create instances - Light, Regular, Medium and Bold. I export my fonts as otf files, so I now have four fonts. I am submitting them into MyFonts and the system reject my fonts because there are errors with the paths in each of my fonts. I again open my exported fonts in Glyphs program and I can see that there are errors with the paths, even though my initial masters still don’t have any errors. What am I doing wrong??

Thanks!

2

Can you post some screenshots?

3

And which errors?

4

Pict_01 Pict_02 Pict_03 Pict_04 Pict_05

Yes, sure, please check my schreenshots.
The errors are incorrect smooth connection, collinear vector

5

This are most likely kinks. That happens when three or more collinear points have different angles and proportions in the masters.

6

Kinks are explained explained in the Multiple Master tutorials: https://glyphsapp.com/tutorials/multiple-masters-part-2-keeping-your-outlines-compatible

For tracking kinks, see the Kink Finder in the mekkablue scripts and Henrique Beier’s Show Smooth Node Angle and Proportions plug-in (available vie Window > Plug-in Manager).

You can avoid the inflection if you delete the handles on the thick stem and turn that segment into a straight line. As far as i can see, all the handles are collinear and describe a straight line.

The hinting settings seem to be not ideal either. I recommend this tutorial: https://glyphsapp.com/tutorials/hinting-postscript-autohinting

Or actually, this high contrast design can probably better do without hinting altogether.

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