First, I couldn't install the fonts on my Win2K machine, but I could on XP (strange) Then, examining the fonts with an editor, I discovered that many characters have a "closing line" as mastercam noticed. I deleted some closing lines, and when I saved the font, I got a warning saying that "some glyphs have open contour" with 2 options:
1) "export only closed contours" by default...
2) "ignore the warning and save all contours". I choosed this one, but after re-loading the font, it had the damn closing lines again... So I guess line fonts are not leagal in TTF... (I'm not (yet) a font specialist...) As said earlier, have a look at
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which lets you sweep along multiple sketch segments, including text, which enables to soften extruded text in any font as in
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