Further to a similar post by Mark Simonson back in 2015, I have a font in whose Medium weight the caps are a bit heavy. It would be vey useful if I could visually shift specific glyphs heavier/lighter through the ‘design space’ (like a variable font) while in context with the lower case that doesn’t change weight, then save those values so on export those chosen glyphs export at a different value.
A workaround would be to export a font at the desired new weight, then cut and paste all the relevant glyphs back into the original font, but the font I’m trying to adjust has too many axes to make this practicable (and the thought of all that repetitive cut/paste is far too depressing). And you’d need to know precisely what weight value was required beforehand, which you don’t.
I’ve found that simply adding/removing weight to the Medium is not the same as shifting it forward and back trough the weight interpolation and needs lots of manual fixing, so again isn’t practicable.
Does a plug-in that does this exist? If not, does anyone fancy writing a write a plug-in? Happy to contribute some £££ as it’d save me a good few days work.