Last night installed the Volcano + 0.6mm nozzle. First impressions: this could be great! Two problems: 1) so far have not been able to get the fan above 25% without thermal runaway; It's starting to seem like the volcano block needs some kind of protection from the parts fan. Anyone else using it? 2) I'm getting lines at the corner edges of the 2cm test cube, particularly at higher layer heights. Have printed in light gray in lit in the most unflattering way so that you can see. The one on the left (0.35mm layers) is printed with: outer perimeter 12.5mm/s (25% full speed) hypothetical full speed: 50mm/2 infill: 75% of 50mm/s The lines occur where the nozzle zooms in to start the infill from the other side of the cube. The one on the right has the same settings but 0.25mm layers. What's going on? I reckon that when the print head is accelerated by the belt it leans in to the direction where it's going, and the outer edge of the nozzle comes up a fraction, leaving a deposit behind. At a lower layer height it can't come up so much. The print speeds seem really low and with the Volcano I was planning on doing some bigger layer heights. What can I try? ps yes both cubes are warped upwards towards the top because the fan is still only at 25%. However dimensionally speaking they are great!