  We investigate the elastic and yielding properties of two dimensional
defect-free mono-crystals made of highly monodisperse droplets. Crystals are
compressed between two parallel boundaries of which one acts as a force sensor.
As the available space between boundaries is reduced, the crystal goes through
successive row-reduction transitions. For small compression forces, the crystal
responds elastically until a critical force is reached and the assembly
fractures in a single catastrophic global event. Correspondingly there is a
peak in the force measurement associated with each row-reduction. The elastic
properties of ideal mono-crystal samples are fully captured by a simple
analytical model consisting of an assembly of individual capillary springs. The
yielding properties of the crystal are captured with a minimal bond breaking
model.
