Sarrus Linear Axis Mark II

This is my second prototype of a Sarrus linkage type linear axis. A Sarrus linkage uses hinged joints to make linear motion. The idea is to have a linear bearing suitable for making part of an x-y cartesian assembly without needing long polished metal rods, thus getting a 3D printer that can make more of its own parts.

Notice that there is a set of 4 holes on the top armature that match 4 hole patterns on the end pieces. This means that one axis could mount on two others at right angles.