I can only agree with the bad reviews. Have 230 ° and 260 ° tried, with Brim without brim, 140% and 200% Initial linewidth, and 1.1 1.5 2.0 Extrusion Multiplier. These different surfaces (glass, rough glass, blue tape, Kapton) and 40 ° & 60 ° Bed temperature. It just does not stick; after the second layer, the warping is extreme and makes the printing impossible. Bad buy.