I was curious to know if the printer could handle tight tolerances to nail the spacings between 0.4-Module metric gears.
Great news–they can–resulting in a nicely-boxed test transmission!
The gears are servo-replacement gears for a very large servo, a trick inspired by @James_Best on his combat robot post.
More details and parts are on the blog post.
Great work @Joshua_Vasquez!
Wouldn’t it be great if you could print the gears as well 
Aye, printing gears would be phenomenal. if we can counteract the slight warping on prints and print with a slightly less brittle material, it might not be too far out of reach…
I considered mixing carbon fiber chop or microballoons to resin for added strength, but I havent had the courage to take the plunge and get a resin rank and resin to exclusively test this idea.
Have you considered following @Steve_Johnstone’s molding techniques? He has some videos on YouTube about this.
I’d consider creating masters (positives) of the gears, then creating negative molds, then casting a resin mixed with carbon flock or something.
Check these links out. Tons of ideas and resin recommendations for cast gears (also: the links are all related):
http://lcamtuf.coredump.cx/gcnc/ch4/
http://lcamtuf.coredump.cx/rstory/
http://makezine.com/2014/03/21/resin-casting-going-from-cad-to-engineering-grade-plastic-parts/
Try Maker Juice SF. It’s available in a “starter” bottle of 500ml. It’s been working really well for me. And the prints are much less brittle than the FL resins. And I print a lot of small stuff, where the difference is more meaningful…
Thought I’d share this print of a worm-gear 
Woo combat robots! Something I know only too well about, been involved for a good 12 years now 