3D printing gear for Olympus 12-50mm lens, need input

Hi all, I searched around to look for supply/seller of gear that goes on the Olympus 12-50mm lens that fit into the Nauticam Macro Port 65 (the port that's use for 60mm macro lens)

The sellers I found are outside of US, price range from $60 pound to $150. During my search, I also found this:

http://www.thingiverse.com/thing:36320/#instructions

I manage to find a local company that can print the gear for me for $15. They actually charge by the hour so 3 files would take about 3 hours to print. However, the resolution will be 0.5mm. I'm wondering if anyone have gone this route. I requested to get a new quote for 0.1mm. If you have gone this route, which print resolution you used and if you have ran into any issue?

Thanks!

Moses

I haven't looked at the thicknesses of that part in any detail, but most home-level machines (Makerbot, Solidoodle, etc) using the FFF method (Filament fusion fabrication) tend to an out-of-the-box tolerance of 0.3mm per layer in the vertical axis with tighter positional tolerance available in the XY plane and use a 1.75mm filament input thru a 0.35mm nozzle. So the supplier might just be covering their bases a bit quoting a 0.5mm tolerance.

Cutting the tolerance to 0.1mm will mean a much longer print time, and potentially more warpage or weaker layer bonds on long prints although the surface finish will be cleaner. Really for a zoom gear that isn't very 'structural' I'd think the 0.5mm would be good enough, assuming the part design had some wiggle room for the meshing gears.

I think the person who designed that posted it here too, you might ask him his thoughts ... do a search on the DIY/Unrequited Gear Lust page and it should turn up.