I used 10% infill, 0.2mm layer height and printed in PLA. It came out perfect!! It flys so well it's unbelievable! There is a serious difference between this and my Robocat (this being better!!) I used a Quattro 12a esc (used the least space) CC3D Atom flight controller, frsky X8R receiver, FRsky voltage meter, eachine 700vtl camera and 200mw transmitter. I've yet to take it on a proper long range flight but the back garden test are extremely promising!!!