Printing a solid 1,2mm wide wall in Cura + plugins Posted May 4, 2018 · Edited May 4, 2018 by jonnybischof Are you printing at a different layer height? It looks like underextrusion and bad layer adhesion. The underextrusion could be due to a higher layer height (?) which might be too high. For example with a 0.4mm nozzle, you don't want to go over 0.2mm layer height because your print lines won't be "square" anymore but more like "rounded out" which seems to be the case here. What material are you printing with? edit: By the way, for strong and accurate mechanical parts I never print faster than 40 mm/s. Typically I'd print at 35mm/s (PLA). For some PLA brands, printing faster will give me a very brittle and easily delaminating result.