Another option is you could use all this time during the fall to make your own Wire EDM machine! Then you can cut all the gears you want in January-February! No, it is not as far out as it sounds. I think either "
Home Shop Machinist" or "
Machinists Workshop" published a set of articles a few years ago on how to do it. You should be able to get back issues from them (see
http://www.homeshopmachinist.net/ for details). As an aside, I have found both of these publications to be very useful - as a non-professional machinist, they have been great to have around for reference during robot-building season! (I have no affiliation with either publication, but have become an avid subscriber!).
Anyway, if I remember correctly, the Wire EDM plans didn't even call for any coconut husks!
-dave