On Thu, 9 Dec, 2021 at 11:27 AM, Leonard Martin Struttmann <lenstruttmann@gmail.com> wrote: To: openscad general discussion Gene, try making the wall an integer multiple of your nozzle size. For example, if you are using a 0.4mm nozzle, make wall=2.4; // an integer multiple of 0.4 Using a 0.28 layer height, Cura predicts 8 hours 23 minutes, 141 grams Good point, forgot about that. But my Prusa MK3S seems rather fond of .20 layers. Much better layer adhesion.Thank you Leonard. Thank you Leonard, Stay well. Cheers Gene