Hello. I am printing this mechanism:

http://www.thingiverse.com/thing:23030
I would like parts to be printed
so they are not as tight to each other so gears can go on the axles with ease and everything spins rather freely.

I printed this mechanism 2 years before and my printer got older, something changed and my parts print differently.

I would like to (thinking virtually) take the surface of every part and set it in by maybe 0.60mm to make parts smaller in all directions, but not to downscale them.
I don't know what official engineering term is.
I would also like ot know how to make this printer print less thick to make outer faces of the part more set in.
Just as if I made those gears out of ice and dipped them in hot water for a second. Some amount of material off the surface would melt off. I want to do this on the printer settings level or software level.

Thank you.

I used to print on Kapton film. Now I print a little differently.

part planetary screenshot.jpg