There is also the -gs flag in makeotf, which makes the compiler only export the glyphs in GlyphOrderAndAliasDB file. You can checkout makeotf -h.

@frederik Makes sense to lean toward using one method. Did not know their were changes to round from py2 to py3! Appreciate you looking at this, Frederik!

Both of you: this is amazing! It took me some time to try out, but I love this. This inspired me to make a small script that would make send a PDF of the Space Center to a Dropbox folder, so I could quickly proof a slightly longer string in Notability. This doesn't allow users to import the proofs into a background layer, but it is something that I have been wanting to do. Thanks for the headstart on some of the os code! https://github.com/thundernixon/quick-proofs/blob/master/space-center-to-cloud-pdf.py