Hello,
i recently edited a *.ttf by adding chinese characters from another *.ttf to it - both were orig. language files from a cell phone.
Everything worked fine and the resulting *.ttf works perfectly but there is one major problem that drives me crazy:
The final *.ttf is TWICE AS LARGE in size than the two original *.ttf’s combined! 
What happened? Is it common for Font Creator? How to prevent that?
Let me quickly tell u my way of editing (obviously I’m new to this):
Opened orig. X1.ttf with Font Creator
Opened orig. X2.ttf with Font Creator
Added desired amount of glyphs (total number in X2.ttf) to X1.ttf ==> add after last glyph
Selected All @ X2.ttf
Copied @ X2.ttf
Selected first newly added glyph @ X1.ttf
Pasted Special @ X1.ttf ==> Glyph Mappings: Keep same mappings
DONE!
orig. X1.ttf = 433KB
orig. X2.ttf = 3.257KB
Final *.ttf = 7.588KB
Please help as space is of importance on a cell phone!
Thanks in advance,
Sellfish
Please make sure you are using the latest version; currently FontCreator 6.1. It has the most advanced compression algorithms, so it should not dramatically increase the file size under normal circumstances. If that doesn’t work, then please send us the font files so we can take a closer look.
Original file may contain many composite glyphs. If you copy them to another font they will become simple glyphs, so a lot of contours are duplicated. There is no easy way to recreate hundreds of Chinese glyphs as composites. Data for completing composites only exists for Latin glyphs and a few character sets — Cyrillic, Greek, etc.
First of all: Thank you!
I will try to use 6.1 and re-do every step… hope it works.
Also I will try to copy the orig. glyphs to the chin. *.ttf as this could also lead to a smaller filesize. But I wonder if my phone will recognize everything without problems.
Anyway, I uploaded the *.ttf files so that u may have a closer look.
s60snr.ttf needs the glyphs from S60SC_C.ttf
s60ssb.ttf needs the glyphs from S60SC_C.ttf
s60tsb.ttf needs the glyphs from S60TCHK_C.ttf
s60ZDIGI.ttf is to be ignored
http://ul.to/tr9pcz
As I suspected, many of the glyphs in S60SC_C.ttf are composites, which will become simple glyphs when copied to another font.
You need permission to edit these fonts, which are the copyright property of Monotype Corporation.