Discovered that Voron printer slicer profiles use 1x extrusioin width. That is to say, 0.4mm extrudes at 0.4mm. Have always understood that to be a bad idea from a part-strength perspective, owing to the likely rounder form the extrusion will take reducing inter-extrusoin and inter-layer adhesion. Nonetheless decided to give it a try. First impression: never had such great sidewalls on a part! So maybe that's why Voron people do it? And maybe they don't do mechanical tests to confront themselves with the downsides? Well maybe we could have the best of both worlds: how about an "extrude outer perimeter at 1x nozzle size" checkbox?