MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
Because I'm not constrained by the mounting distance but by the amount of material between the lens and the gear. Too much and it's too inflexible for mounting the gear on the lens, too little and it simply breaks.
(I guess with a larger one I could still construct someting to still mount it on the lens.)