Local Interpolation

I don’t understand

I have a 3 axis font. One of the axis is set only for virtual masters:

Zrzut ekranu 2023-06-26 o 11.37.20

Real masters have a value 0 in this third axis - all of them.

Zrzut ekranu 2023-06-26 o 11.38.18

So some glyphs have special intermediate layers that have the value 100 on that axis. When I use the local interpolation custom parameter and want the font to export these glyphs at their EMSZ of 100, they don’t export at all.

These are the virtual masters:

Zrzut ekranu 2023-06-26 o 11.40.20

You don’t need all those. It is only needed for the extreme positions to define the axis ranges.

So I need just one?

Most likely.