I read that article. Rather than go into detail, I'll simply say this: steer clear of attempting that technique on the
curved plastic D8B buttons. It will end in disaster.
On closer inspection of the buttons on my unit, I discovered that the text on the buttons is not Avenir 95 Black but in fact Avenir 85 Heavy. They apparently changed the font weight as it went into production, well after that drawing was originally generated.
So I've posted another drawing, this time a "just the silkscreen" .TIFF with the fonts converted to outlines...making a font match a non-issue. This will work in just about any graphics program and (hint) quite well with "Black/Clear" PTouch labellers.
http://c3410583.r83.cf0.rackcdn.com/Transport.tifAnd if anyone really cares about these details Avenir was the ID Dept's favorite font for surface silkscreening through the late 90's. Most probably because they bought a license for it. However the buttons weren't silkscreened. The process used was dye-sublimation.