Hey guys! I'm designing a device in blender. I make a living 3d modelling, so it should be dead-on with accuracy. The device I'm making requires carefully measured gear ratios for good operation. I was hoping to create not only gears but other odd-shaped parts and then have them printed here. My big questions are: are the materials as strong as this sort of need would require? And is the printing accurate? I'll be doing my first order soon, so let me know of any "gotchas" I might need to know about, possible problems, and so forth. Thanks!