rugged airport buckle with 2-color logo on a single color printer

Update: what you see here is generation 4 of my airport buckles. The new gen5 buckle (50%lighter, 20%thinner, only 1 part, even more rugged) made into the finals of the "1. Süddeutsche 3D-Druck Challenge". If you're interested in that one - send me a message.

Below is Gen4:

after trying a lot of airport-buckle designs, I decided to come up with my own. the ones I found were either difficult to print and/or too fragile, so they would break way too easily - while you need to rely on your bel