Mechanical Rigidity/Lulzbot Taz4 V slot Openbuilds rework

Lulzbot TAZ 4 Vertical Upgrade using Openbuilds V-Slot and 8020 extrusion

This picture (taken from above) shows a vertical carriage held in place with V-slot rollers on solid, sturdy 8020 extrusion. Basically this ain't going anywhere. The 8020 extrusion will not be twisting, and the carriage will not be jumping up and down or rotating thanks to the V-rollers. As a result it is only the plastic that may deform under load that could potentially result in any kind of movement. However given that the parts appear to be at least 5mm thick, in practice the amount of bending should not be significant.

All the problems usually associated with rods (bending of the rods, "play" in the bearings) have therefore completely gone.