Geocaching Capsule Design 3D-Printable

Here is a geocaching capsule design, which I have modeled in Blender 09.11.2015 to learn a bit about making 3d-printable stuff.
Test printed by MyMiniFactory. http://wp.me/P3dmoi-1Uy

3d-Printing details:

Needed time: 300 – 320 minuten
Amount of filament: 63gr
3d printing technology: FDM