Today we printed richgain's Interlocking Puzzle #1 from Thingiverse. Actually we printed it three times, in three different colors, so that we could make three multi-colored versions. The puzzle is easy, so a good simple gift for anyone. The three together make a nice set since the colors are on different pieces in each cube.
Thingiverse link: http://www.thingiverse.com/make:88771
Settings: MakerBot Replicator Mini on Standard settings, .2mm layer height. This is the recommended layer height in the Instructions for the model. For designs where tolerance is important it is really key to use the resolution that the designer used! The fit was perfect; thank you richgain!
Puzzle hint: Try putting the two larger pieces together first, to see where the smaller piece has to go.