figured i'd give this thread a bump as someone asked what i used for my FS 60C

i used the bahtinov mask generator here:
http://astrojargon.net/MaskGenerator.aspx
using FL 354 aperture 60 bahtinov factor 50
to generate the mask:
http://whwastro.homestead.com/files/temp/bahtinov_FS60C_FL354_BFact_50_.svg
printed on normal paper with inkscape (freeware), cut out with an exacto knife on a plastic cutting board, and cut out a bread crumb container for the cylinder (had to open the cylinder as it wasn't quite big enough).

it isn't pretty:

but it gives a nice focus pattern, even using the reducer at different FL:

as mentioned before
don't use on DSO's