This is a test print I did before working on a different project. There are 6 pieces:
1 top plate
1 base plate
2 pin bases
2 pin caps
The spacing between the cylinders is 0.1 mm, and the spacing between faces is 0.2 mm.
On my print, the pin bases are flush with the bottom of the base plate, and the tops of the pin caps sit about 1 to 2 mm above the top of the upper plate.
It took quite a bit of force to pull the plates apart once it was fully assembled, but, obviously, pulling it apart the first time was the only time it was difficult. After disassembling it and reassembling it for half an hour while watching Futurama, the two faces still hold quite well.
I am posting this because I plan on charging a couple of bucks for the new design I made, and I would like for people to be able to do a test print for free to make sure their printers can handle it. The new design requires 60 pins (120 pieces) to assemble, so I imagine that it would suck to pay for a design and find out that your printer can't do the print.